diff --git a/include/libcamera/bound_method.h b/include/libcamera/bound_method.h
index 983bb5cbbad0..d1e4448304a9 100644
--- a/include/libcamera/bound_method.h
+++ b/include/libcamera/bound_method.h
@@ -214,7 +214,7 @@ public:
 
 	bool match(R (*func)(Args...)) const { return func == func_; }
 
-	R activate(Args... args, bool deleteMethod = false) override
+	R activate(Args... args, [[maybe_unused]] bool deleteMethod = false) override
 	{
 		return (*func_)(args...);
 	}
diff --git a/include/libcamera/signal.h b/include/libcamera/signal.h
index ed30eb559127..accb797e911c 100644
--- a/include/libcamera/signal.h
+++ b/include/libcamera/signal.h
@@ -70,7 +70,7 @@ public:
 
 	void disconnect()
 	{
-		SignalBase::disconnect([](SlotList::iterator &iter) {
+		SignalBase::disconnect([]([[maybe_unused]] SlotList::iterator &iter) {
 			return true;
 		});
 	}
diff --git a/include/libcamera/span.h b/include/libcamera/span.h
index 513ddb432405..738af6aca871 100644
--- a/include/libcamera/span.h
+++ b/include/libcamera/span.h
@@ -113,12 +113,12 @@ public:
 	{
 	}
 
-	constexpr Span(pointer ptr, size_type count)
+	constexpr Span(pointer ptr, [[maybe_unused]] size_type count)
 		: data_(ptr)
 	{
 	}
 
-	constexpr Span(pointer first, pointer last)
+	constexpr Span(pointer first, [[maybe_unused]] pointer last)
 		: data_(first)
 	{
 	}
diff --git a/meson.build b/meson.build
index ce1d1c63ddc6..d7e8122ccaa3 100644
--- a/meson.build
+++ b/meson.build
@@ -37,7 +37,6 @@ if cc.has_header_symbol('stdlib.h', 'secure_getenv', prefix : '#define _GNU_SOUR
 endif
 
 common_arguments = [
-    '-Wno-unused-parameter',
     '-include', 'config.h',
 ]
 
diff --git a/src/android/camera3_hal.cpp b/src/android/camera3_hal.cpp
index decaf59e6915..ddcfea591ce6 100644
--- a/src/android/camera3_hal.cpp
+++ b/src/android/camera3_hal.cpp
@@ -32,18 +32,21 @@ static int hal_get_camera_info(int id, struct camera_info *info)
 	return cameraManager.getCameraInfo(id, info);
 }
 
-static int hal_set_callbacks(const camera_module_callbacks_t *callbacks)
+static int hal_set_callbacks([[maybe_unused]] const camera_module_callbacks_t *callbacks)
 {
 	return 0;
 }
 
-static int hal_open_legacy(const struct hw_module_t *module, const char *id,
-			   uint32_t halVersion, struct hw_device_t **device)
+static int hal_open_legacy([[maybe_unused]] const struct hw_module_t *module,
+			   [[maybe_unused]] const char *id,
+			   [[maybe_unused]] uint32_t halVersion,
+			   [[maybe_unused]] struct hw_device_t **device)
 {
 	return -ENOSYS;
 }
 
-static int hal_set_torch_mode(const char *camera_id, bool enabled)
+static int hal_set_torch_mode([[maybe_unused]] const char *camera_id,
+			      [[maybe_unused]] bool enabled)
 {
 	return -ENOSYS;
 }
diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index 3419236a061c..8a39bee690a0 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -1541,8 +1541,9 @@ void CameraDevice::notifyError(uint32_t frameNumber, camera3_stream_t *stream)
 /*
  * Produce a set of fixed result metadata.
  */
-std::unique_ptr<CameraMetadata> CameraDevice::getResultMetadata(int frame_number,
-								int64_t timestamp)
+std::unique_ptr<CameraMetadata>
+CameraDevice::getResultMetadata([[maybe_unused]] int frame_number,
+				int64_t timestamp)
 {
 	/*
 	 * \todo Keep this in sync with the actual number of entries.
diff --git a/src/android/camera_ops.cpp b/src/android/camera_ops.cpp
index 216ac285f964..696e80436821 100644
--- a/src/android/camera_ops.cpp
+++ b/src/android/camera_ops.cpp
@@ -61,11 +61,12 @@ static int hal_dev_process_capture_request(const struct camera3_device *dev,
 	return camera->processCaptureRequest(request);
 }
 
-static void hal_dev_dump(const struct camera3_device *dev, int fd)
+static void hal_dev_dump([[maybe_unused]] const struct camera3_device *dev,
+			 [[maybe_unused]] int fd)
 {
 }
 
-static int hal_dev_flush(const struct camera3_device *dev)
+static int hal_dev_flush([[maybe_unused]] const struct camera3_device *dev)
 {
 	return 0;
 }
diff --git a/src/cam/main.cpp b/src/cam/main.cpp
index cc3facd5a5b2..244720b491f5 100644
--- a/src/cam/main.cpp
+++ b/src/cam/main.cpp
@@ -378,7 +378,7 @@ int CamApp::run()
 	return 0;
 }
 
-void signalHandler(int signal)
+void signalHandler([[maybe_unused]] int signal)
 {
 	std::cout << "Exiting" << std::endl;
 	CamApp::instance()->quit();
diff --git a/src/gstreamer/gstlibcamerapool.cpp b/src/gstreamer/gstlibcamerapool.cpp
index 8f536169455f..b756ee356d61 100644
--- a/src/gstreamer/gstlibcamerapool.cpp
+++ b/src/gstreamer/gstlibcamerapool.cpp
@@ -33,7 +33,7 @@ G_DEFINE_TYPE(GstLibcameraPool, gst_libcamera_pool, GST_TYPE_BUFFER_POOL);
 
 static GstFlowReturn
 gst_libcamera_pool_acquire_buffer(GstBufferPool *pool, GstBuffer **buffer,
-				  GstBufferPoolAcquireParams *params)
+				  [[maybe_unused]] GstBufferPoolAcquireParams *params)
 {
 	GstLibcameraPool *self = GST_LIBCAMERA_POOL(pool);
 	GstBuffer *buf = GST_BUFFER(gst_atomic_queue_pop(self->queue));
diff --git a/src/gstreamer/gstlibcameraprovider.cpp b/src/gstreamer/gstlibcameraprovider.cpp
index 840e87a3d8da..cd850d813a6e 100644
--- a/src/gstreamer/gstlibcameraprovider.cpp
+++ b/src/gstreamer/gstlibcameraprovider.cpp
@@ -89,7 +89,7 @@ gst_libcamera_device_set_property(GObject *object, guint prop_id,
 }
 
 static void
-gst_libcamera_device_init(GstLibcameraDevice *self)
+gst_libcamera_device_init([[maybe_unused]] GstLibcameraDevice *self)
 {
 }
 
diff --git a/src/gstreamer/gstlibcamerasrc.cpp b/src/gstreamer/gstlibcamerasrc.cpp
index 0c28ae3f2852..1bfc2e2f8cf3 100644
--- a/src/gstreamer/gstlibcamerasrc.cpp
+++ b/src/gstreamer/gstlibcamerasrc.cpp
@@ -338,7 +338,8 @@ gst_libcamera_src_task_run(gpointer user_data)
 }
 
 static void
-gst_libcamera_src_task_enter(GstTask *task, GThread *thread, gpointer user_data)
+gst_libcamera_src_task_enter(GstTask *task, [[maybe_unused]] GThread *thread,
+			     gpointer user_data)
 {
 	GstLibcameraSrc *self = GST_LIBCAMERA_SRC(user_data);
 	GLibRecLocker lock(&self->stream_lock);
@@ -467,7 +468,9 @@ done:
 }
 
 static void
-gst_libcamera_src_task_leave(GstTask *task, GThread *thread, gpointer user_data)
+gst_libcamera_src_task_leave([[maybe_unused]] GstTask *task,
+			     [[maybe_unused]] GThread *thread,
+			     gpointer user_data)
 {
 	GstLibcameraSrc *self = GST_LIBCAMERA_SRC(user_data);
 	GstLibcameraSrcState *state = self->state;
diff --git a/src/ipa/raspberrypi/controller/rpi/agc.cpp b/src/ipa/raspberrypi/controller/rpi/agc.cpp
index c02b5ece242f..3573f36be46a 100644
--- a/src/ipa/raspberrypi/controller/rpi/agc.cpp
+++ b/src/ipa/raspberrypi/controller/rpi/agc.cpp
@@ -221,7 +221,8 @@ void Agc::SetConstraintMode(std::string const &constraint_mode_name)
 	constraint_mode_name_ = constraint_mode_name;
 }
 
-void Agc::SwitchMode(CameraMode const &camera_mode, Metadata *metadata)
+void Agc::SwitchMode([[maybe_unused]] CameraMode const &camera_mode,
+		     Metadata *metadata)
 {
 	// On a mode switch, it's possible the exposure profile could change,
 	// so we run through the dividing up of exposure/gain again and
diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index 37472087f5a9..4557016c2dd4 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -191,7 +191,7 @@ void IPARPi::setMode(const CameraSensorInfo &sensorInfo)
 }
 
 void IPARPi::configure(const CameraSensorInfo &sensorInfo,
-		       const std::map<unsigned int, IPAStream> &streamConfig,
+		       [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
 		       const std::map<unsigned int, const ControlInfoMap &> &entityControls,
 		       const IPAOperationData &ipaConfig,
 		       IPAOperationData *result)
diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
index 3a1c50c4add0..d95d902adff3 100644
--- a/src/ipa/rkisp1/rkisp1.cpp
+++ b/src/ipa/rkisp1/rkisp1.cpp
@@ -32,7 +32,10 @@ LOG_DEFINE_CATEGORY(IPARkISP1)
 class IPARkISP1 : public IPAInterface
 {
 public:
-	int init(const IPASettings &settings) override { return 0; }
+	int init([[maybe_unused]] const IPASettings &settings) override
+	{
+		return 0;
+	}
 	int start() override { return 0; }
 	void stop() override {}
 
@@ -75,11 +78,11 @@ private:
  * assemble one. Make sure the reported sensor information are relevant
  * before accessing them.
  */
-void IPARkISP1::configure(const CameraSensorInfo &info,
-			  const std::map<unsigned int, IPAStream> &streamConfig,
+void IPARkISP1::configure([[maybe_unused]] const CameraSensorInfo &info,
+			  [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
 			  const std::map<unsigned int, const ControlInfoMap &> &entityControls,
-			  const IPAOperationData &ipaConfig,
-			  IPAOperationData *result)
+			  [[maybe_unused]] const IPAOperationData &ipaConfig,
+			  [[maybe_unused]] IPAOperationData *result)
 {
 	if (entityControls.empty())
 		return;
diff --git a/src/ipa/vimc/vimc.cpp b/src/ipa/vimc/vimc.cpp
index 1593c92d80f3..ef257762a1d4 100644
--- a/src/ipa/vimc/vimc.cpp
+++ b/src/ipa/vimc/vimc.cpp
@@ -37,14 +37,14 @@ public:
 	int start() override;
 	void stop() override;
 
-	void configure(const CameraSensorInfo &sensorInfo,
-		       const std::map<unsigned int, IPAStream> &streamConfig,
-		       const std::map<unsigned int, const ControlInfoMap &> &entityControls,
-		       const IPAOperationData &ipaConfig,
-		       IPAOperationData *result) override {}
-	void mapBuffers(const std::vector<IPABuffer> &buffers) override {}
-	void unmapBuffers(const std::vector<unsigned int> &ids) override {}
-	void processEvent(const IPAOperationData &event) override {}
+	void configure([[maybe_unused]] const CameraSensorInfo &sensorInfo,
+		       [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
+		       [[maybe_unused]] const std::map<unsigned int, const ControlInfoMap &> &entityControls,
+		       [[maybe_unused]] const IPAOperationData &ipaConfig,
+		       [[maybe_unused]] IPAOperationData *result) override {}
+	void mapBuffers([[maybe_unused]] const std::vector<IPABuffer> &buffers) override {}
+	void unmapBuffers([[maybe_unused]] const std::vector<unsigned int> &ids) override {}
+	void processEvent([[maybe_unused]] const IPAOperationData &event) override {}
 
 private:
 	void initTrace();
diff --git a/src/libcamera/device_enumerator_udev.cpp b/src/libcamera/device_enumerator_udev.cpp
index 96689daa5dd1..c6e23a1a7a18 100644
--- a/src/libcamera/device_enumerator_udev.cpp
+++ b/src/libcamera/device_enumerator_udev.cpp
@@ -327,7 +327,7 @@ int DeviceEnumeratorUdev::addV4L2Device(dev_t devnum)
 	return 0;
 }
 
-void DeviceEnumeratorUdev::udevNotify(EventNotifier *notifier)
+void DeviceEnumeratorUdev::udevNotify([[maybe_unused]] EventNotifier *notifier)
 {
 	struct udev_device *dev = udev_monitor_receive_device(monitor_);
 	std::string action(udev_device_get_action(dev));
diff --git a/src/libcamera/ipc_unixsocket.cpp b/src/libcamera/ipc_unixsocket.cpp
index 7df86e885f23..701b2c518217 100644
--- a/src/libcamera/ipc_unixsocket.cpp
+++ b/src/libcamera/ipc_unixsocket.cpp
@@ -308,7 +308,7 @@ int IPCUnixSocket::recvData(void *buffer, size_t length,
 	return 0;
 }
 
-void IPCUnixSocket::dataNotifier(EventNotifier *notifier)
+void IPCUnixSocket::dataNotifier([[maybe_unused]] EventNotifier *notifier)
 {
 	int ret;
 
diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
index b8f0549f0c60..42c9caa03e2e 100644
--- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
+++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
@@ -758,7 +758,7 @@ int PipelineHandlerRPi::configure(Camera *camera, CameraConfiguration *config)
 	return ret;
 }
 
-int PipelineHandlerRPi::exportFrameBuffers(Camera *camera, Stream *stream,
+int PipelineHandlerRPi::exportFrameBuffers([[maybe_unused]] Camera *camera, Stream *stream,
 					   std::vector<std::unique_ptr<FrameBuffer>> *buffers)
 {
 	RPiStream *s = static_cast<RPiStream *>(stream);
@@ -1182,7 +1182,8 @@ int RPiCameraData::configureIPA()
 	return 0;
 }
 
-void RPiCameraData::queueFrameAction(unsigned int frame, const IPAOperationData &action)
+void RPiCameraData::queueFrameAction([[maybe_unused]] unsigned int frame,
+				     const IPAOperationData &action)
 {
 	/*
 	 * The following actions can be handled when the pipeline handler is in
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 32fdaed7c661..4d89aab3845d 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -700,7 +700,7 @@ int PipelineHandlerRkISP1::configure(Camera *camera, CameraConfiguration *c)
 	return 0;
 }
 
-int PipelineHandlerRkISP1::exportFrameBuffers(Camera *camera, Stream *stream,
+int PipelineHandlerRkISP1::exportFrameBuffers([[maybe_unused]] Camera *camera, Stream *stream,
 					      std::vector<std::unique_ptr<FrameBuffer>> *buffers)
 {
 	unsigned int count = stream->configuration().bufferCount;
diff --git a/src/libcamera/pipeline/rkisp1/timeline.cpp b/src/libcamera/pipeline/rkisp1/timeline.cpp
index f5194608ced7..6b83bbe5b589 100644
--- a/src/libcamera/pipeline/rkisp1/timeline.cpp
+++ b/src/libcamera/pipeline/rkisp1/timeline.cpp
@@ -204,7 +204,7 @@ void Timeline::updateDeadline()
 	timer_.start(deadline);
 }
 
-void Timeline::timeout(Timer *timer)
+void Timeline::timeout([[maybe_unused]] Timer *timer)
 {
 	utils::time_point now = std::chrono::steady_clock::now();
 
diff --git a/src/libcamera/process.cpp b/src/libcamera/process.cpp
index 8311d274a288..994190dc6f3d 100644
--- a/src/libcamera/process.cpp
+++ b/src/libcamera/process.cpp
@@ -89,7 +89,7 @@ void sigact(int signal, siginfo_t *info, void *ucontext)
 
 } /* namespace */
 
-void ProcessManager::sighandler(EventNotifier *notifier)
+void ProcessManager::sighandler([[maybe_unused]] EventNotifier *notifier)
 {
 	char data;
 	ssize_t ret = read(pipe_[0], &data, sizeof(data));
diff --git a/src/libcamera/proxy/ipa_proxy_linux.cpp b/src/libcamera/proxy/ipa_proxy_linux.cpp
index 68eafb307b2a..b78a0e4535f5 100644
--- a/src/libcamera/proxy/ipa_proxy_linux.cpp
+++ b/src/libcamera/proxy/ipa_proxy_linux.cpp
@@ -26,17 +26,20 @@ public:
 	IPAProxyLinux(IPAModule *ipam);
 	~IPAProxyLinux();
 
-	int init(const IPASettings &settings) override { return 0; }
+	int init([[maybe_unused]] const IPASettings &settings) override
+	{
+		return 0;
+	}
 	int start() override { return 0; }
 	void stop() override {}
-	void configure(const CameraSensorInfo &sensorInfo,
-		       const std::map<unsigned int, IPAStream> &streamConfig,
-		       const std::map<unsigned int, const ControlInfoMap &> &entityControls,
-		       const IPAOperationData &ipaConfig,
-		       IPAOperationData *result) override {}
-	void mapBuffers(const std::vector<IPABuffer> &buffers) override {}
-	void unmapBuffers(const std::vector<unsigned int> &ids) override {}
-	void processEvent(const IPAOperationData &event) override {}
+	void configure([[maybe_unused]] const CameraSensorInfo &sensorInfo,
+		       [[maybe_unused]] const std::map<unsigned int, IPAStream> &streamConfig,
+		       [[maybe_unused]] const std::map<unsigned int, const ControlInfoMap &> &entityControls,
+		       [[maybe_unused]] const IPAOperationData &ipaConfig,
+		       [[maybe_unused]] IPAOperationData *result) override {}
+	void mapBuffers([[maybe_unused]] const std::vector<IPABuffer> &buffers) override {}
+	void unmapBuffers([[maybe_unused]] const std::vector<unsigned int> &ids) override {}
+	void processEvent([[maybe_unused]] const IPAOperationData &event) override {}
 
 private:
 	void readyRead(IPCUnixSocket *ipc);
@@ -91,7 +94,7 @@ IPAProxyLinux::~IPAProxyLinux()
 	delete socket_;
 }
 
-void IPAProxyLinux::readyRead(IPCUnixSocket *ipc)
+void IPAProxyLinux::readyRead([[maybe_unused]] IPCUnixSocket *ipc)
 {
 }
 
diff --git a/src/libcamera/v4l2_pixelformat.cpp b/src/libcamera/v4l2_pixelformat.cpp
index 8391ec48ac10..30c94bb98f44 100644
--- a/src/libcamera/v4l2_pixelformat.cpp
+++ b/src/libcamera/v4l2_pixelformat.cpp
@@ -196,7 +196,7 @@ PixelFormat V4L2PixelFormat::toPixelFormat() const
  * \return The V4L2PixelFormat corresponding to \a pixelFormat
  */
 V4L2PixelFormat V4L2PixelFormat::fromPixelFormat(const PixelFormat &pixelFormat,
-						 bool multiplanar)
+						 [[maybe_unused]] bool multiplanar)
 {
 	const PixelFormatInfo &info = PixelFormatInfo::info(pixelFormat);
 	if (!info.isValid())
diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index 652677ff1d4d..508522ef42bb 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -1462,7 +1462,7 @@ int V4L2VideoDevice::queueBuffer(FrameBuffer *buffer)
  * For Capture video devices the FrameBuffer will contain valid data.
  * For Output video devices the FrameBuffer can be considered empty.
  */
-void V4L2VideoDevice::bufferAvailable(EventNotifier *notifier)
+void V4L2VideoDevice::bufferAvailable([[maybe_unused]] EventNotifier *notifier)
 {
 	FrameBuffer *buffer = dequeueBuffer();
 	if (!buffer)
@@ -1539,7 +1539,7 @@ FrameBuffer *V4L2VideoDevice::dequeueBuffer()
  * When this slot is called, a V4L2 event is available to be dequeued from the
  * device.
  */
-void V4L2VideoDevice::eventAvailable(EventNotifier *notifier)
+void V4L2VideoDevice::eventAvailable([[maybe_unused]] EventNotifier *notifier)
 {
 	struct v4l2_event event{};
 	int ret = ioctl(VIDIOC_DQEVENT, &event);
diff --git a/src/qcam/dng_writer.cpp b/src/qcam/dng_writer.cpp
index b5b81f0637b5..030d1387118d 100644
--- a/src/qcam/dng_writer.cpp
+++ b/src/qcam/dng_writer.cpp
@@ -215,7 +215,7 @@ void packScanlineIPU3(void *output, const void *input, unsigned int width)
 	}
 }
 
-void thumbScanlineIPU3(const FormatInfo &info, void *output,
+void thumbScanlineIPU3([[maybe_unused]] const FormatInfo &info, void *output,
 		       const void *input, unsigned int width,
 		       unsigned int stride)
 {
@@ -350,7 +350,8 @@ static const std::map<PixelFormat, FormatInfo> formatInfo = {
 int DNGWriter::write(const char *filename, const Camera *camera,
 		     const StreamConfiguration &config,
 		     const ControlList &metadata,
-		     const FrameBuffer *buffer, const void *data)
+		     [[maybe_unused]] const FrameBuffer *buffer,
+		     const void *data)
 {
 	const auto it = formatInfo.find(config.pixelFormat);
 	if (it == formatInfo.cend()) {
diff --git a/src/qcam/main.cpp b/src/qcam/main.cpp
index b3468cbf47e2..bae358df0877 100644
--- a/src/qcam/main.cpp
+++ b/src/qcam/main.cpp
@@ -17,7 +17,7 @@
 #include "../cam/stream_options.h"
 #include "main_window.h"
 
-void signalHandler(int signal)
+void signalHandler([[maybe_unused]] int signal)
 {
 	qInfo() << "Exiting";
 	qApp->quit();
diff --git a/src/v4l2/v4l2_camera.cpp b/src/v4l2/v4l2_camera.cpp
index 61bca0732447..7a22f983ec0e 100644
--- a/src/v4l2/v4l2_camera.cpp
+++ b/src/v4l2/v4l2_camera.cpp
@@ -158,7 +158,7 @@ int V4L2Camera::validateConfiguration(const PixelFormat &pixelFormat,
 	return 0;
 }
 
-int V4L2Camera::allocBuffers(unsigned int count)
+int V4L2Camera::allocBuffers([[maybe_unused]] unsigned int count)
 {
 	Stream *stream = config_->at(0).stream();
 
diff --git a/test/camera/buffer_import.cpp b/test/camera/buffer_import.cpp
index 97a8582761a7..d57ffa75edeb 100644
--- a/test/camera/buffer_import.cpp
+++ b/test/camera/buffer_import.cpp
@@ -33,7 +33,8 @@ public:
 	}
 
 protected:
-	void bufferComplete(Request *request, FrameBuffer *buffer)
+	void bufferComplete([[maybe_unused]] Request *request,
+			    FrameBuffer *buffer)
 	{
 		if (buffer->metadata().status != FrameMetadata::FrameSuccess)
 			return;
diff --git a/test/camera/capture.cpp b/test/camera/capture.cpp
index 0fe3bf9be7f1..eb67bf2da71f 100644
--- a/test/camera/capture.cpp
+++ b/test/camera/capture.cpp
@@ -26,7 +26,8 @@ protected:
 	unsigned int completeBuffersCount_;
 	unsigned int completeRequestsCount_;
 
-	void bufferComplete(Request *request, FrameBuffer *buffer)
+	void bufferComplete([[maybe_unused]] Request *request,
+			    FrameBuffer *buffer)
 	{
 		if (buffer->metadata().status != FrameMetadata::FrameSuccess)
 			return;
diff --git a/test/hotplug-cameras.cpp b/test/hotplug-cameras.cpp
index 6a94535fa315..7d551eeb900d 100644
--- a/test/hotplug-cameras.cpp
+++ b/test/hotplug-cameras.cpp
@@ -26,12 +26,12 @@ using namespace libcamera;
 class HotplugTest : public Test
 {
 protected:
-	void cameraAddedHandler(std::shared_ptr<Camera> cam)
+	void cameraAddedHandler([[maybe_unused]] std::shared_ptr<Camera> cam)
 	{
 		cameraAdded_ = true;
 	}
 
-	void cameraRemovedHandler(std::shared_ptr<Camera> cam)
+	void cameraRemovedHandler([[maybe_unused]] std::shared_ptr<Camera> cam)
 	{
 		cameraRemoved_ = true;
 	}
diff --git a/test/ipa/ipa_wrappers_test.cpp b/test/ipa/ipa_wrappers_test.cpp
index 23c799da0663..59d991cbbf6a 100644
--- a/test/ipa/ipa_wrappers_test.cpp
+++ b/test/ipa/ipa_wrappers_test.cpp
@@ -70,8 +70,8 @@ public:
 	void configure(const CameraSensorInfo &sensorInfo,
 		       const std::map<unsigned int, IPAStream> &streamConfig,
 		       const std::map<unsigned int, const ControlInfoMap &> &entityControls,
-		       const IPAOperationData &ipaConfig,
-		       IPAOperationData *result) override
+		       [[maybe_unused]] const IPAOperationData &ipaConfig,
+		       [[maybe_unused]] IPAOperationData *result) override
 	{
 		/* Verify sensorInfo. */
 		if (sensorInfo.outputSize.width != 2560 ||
diff --git a/test/libtest/test.h b/test/libtest/test.h
index 26d4b94bc12d..8ecf2bda950f 100644
--- a/test/libtest/test.h
+++ b/test/libtest/test.h
@@ -30,7 +30,7 @@ protected:
 };
 
 #define TEST_REGISTER(klass)						\
-int main(int argc, char *argv[])					\
+int main([[maybe_unused]] int argc, [[maybe_unused]] char *argv[])	\
 {									\
 	return klass().execute();					\
 }
diff --git a/test/log/log_process.cpp b/test/log/log_process.cpp
index d46d5e354727..b024f002843c 100644
--- a/test/log/log_process.cpp
+++ b/test/log/log_process.cpp
@@ -125,7 +125,8 @@ protected:
 	}
 
 private:
-	void procFinished(Process *proc, enum Process::ExitStatus exitStatus, int exitCode)
+	void procFinished([[maybe_unused]] Process *proc,
+			  enum Process::ExitStatus exitStatus, int exitCode)
 	{
 		exitStatus_ = exitStatus;
 		exitCode_ = exitCode;
diff --git a/test/object-invoke.cpp b/test/object-invoke.cpp
index 1ae11bb11e16..f3fd23283239 100644
--- a/test/object-invoke.cpp
+++ b/test/object-invoke.cpp
@@ -50,7 +50,7 @@ public:
 		value_ = value;
 	}
 
-	void methodWithReference(const int &value)
+	void methodWithReference([[maybe_unused]] const int &value)
 	{
 	}
 
diff --git a/test/process/process_test.cpp b/test/process/process_test.cpp
index 721a7c9d46ff..42a26749f5d9 100644
--- a/test/process/process_test.cpp
+++ b/test/process/process_test.cpp
@@ -80,7 +80,8 @@ protected:
 	}
 
 private:
-	void procFinished(Process *proc, enum Process::ExitStatus exitStatus, int exitCode)
+	void procFinished([[maybe_unused]] Process *proc,
+			  enum Process::ExitStatus exitStatus, int exitCode)
 	{
 		exitStatus_ = exitStatus;
 		exitCode_ = exitCode;
diff --git a/test/timer-thread.cpp b/test/timer-thread.cpp
index 2f901787f5fb..f794d8e7dd4e 100644
--- a/test/timer-thread.cpp
+++ b/test/timer-thread.cpp
@@ -40,7 +40,7 @@ public:
 	}
 
 private:
-	void timeoutHandler(Timer *timer)
+	void timeoutHandler([[maybe_unused]] Timer *timer)
 	{
 		timeout_ = true;
 	}
diff --git a/test/timer.cpp b/test/timer.cpp
index 7d5b93c37799..537489d736ad 100644
--- a/test/timer.cpp
+++ b/test/timer.cpp
@@ -57,7 +57,7 @@ public:
 	}
 
 private:
-	void timeoutHandler(Timer *timer)
+	void timeoutHandler([[maybe_unused]] Timer *timer)
 	{
 		expiration_ = std::chrono::steady_clock::now();
 		count_++;