diff --git a/include/libcamera/camera.h b/include/libcamera/camera.h
index 326b14d0ca01..d71641805c0a 100644
--- a/include/libcamera/camera.h
+++ b/include/libcamera/camera.h
@@ -74,7 +74,7 @@ protected:
 class Camera final : public Object, public std::enable_shared_from_this<Camera>,
 		     public Extensible
 {
-	LIBCAMERA_DECLARE_PRIVATE(Camera)
+	LIBCAMERA_DECLARE_PRIVATE()
 
 public:
 	static std::shared_ptr<Camera> create(PipelineHandler *pipe,
diff --git a/include/libcamera/camera_manager.h b/include/libcamera/camera_manager.h
index 35a59f0df4ca..c2f0b786da8e 100644
--- a/include/libcamera/camera_manager.h
+++ b/include/libcamera/camera_manager.h
@@ -22,7 +22,7 @@ class Camera;
 
 class CameraManager : public Object, public Extensible
 {
-	LIBCAMERA_DECLARE_PRIVATE(CameraManager)
+	LIBCAMERA_DECLARE_PRIVATE()
 public:
 	CameraManager();
 	~CameraManager();
diff --git a/include/libcamera/class.h b/include/libcamera/class.h
index 920624d8e726..466114ecfaf4 100644
--- a/include/libcamera/class.h
+++ b/include/libcamera/class.h
@@ -30,7 +30,7 @@ namespace libcamera {
 #endif
 
 #ifndef __DOXYGEN__
-#define LIBCAMERA_DECLARE_PRIVATE(klass)				\
+#define LIBCAMERA_DECLARE_PRIVATE()					\
 public:									\
 	class Private;							\
 	friend class Private;
@@ -46,7 +46,7 @@ public:									\
 	_o<Public>();
 
 #else
-#define LIBCAMERA_DECLARE_PRIVATE(klass)
+#define LIBCAMERA_DECLARE_PRIVATE()
 #define LIBCAMERA_DECLARE_PUBLIC(klass)
 #define LIBCAMERA_D_PTR(klass)
 #define LIBCAMERA_O_PTR(klass)
diff --git a/src/android/camera_buffer.h b/src/android/camera_buffer.h
index 7e8970b49f49..c88124b2b3f3 100644
--- a/src/android/camera_buffer.h
+++ b/src/android/camera_buffer.h
@@ -14,7 +14,7 @@
 
 class CameraBuffer final : public libcamera::Extensible
 {
-	LIBCAMERA_DECLARE_PRIVATE(CameraBuffer)
+	LIBCAMERA_DECLARE_PRIVATE()
 
 public:
 	CameraBuffer(buffer_handle_t camera3Buffer, int flags);