diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp
index c77e1aff7978..cb52d4cea3f6 100644
--- a/src/libcamera/v4l2_videodevice.cpp
+++ b/src/libcamera/v4l2_videodevice.cpp
@@ -711,7 +711,8 @@ void V4L2VideoDevice::close()
 
 std::string V4L2VideoDevice::logPrefix() const
 {
-	return deviceNode() + (V4L2_TYPE_IS_OUTPUT(bufferType_) ? "[out]" : "[cap]");
+	return deviceNode() + "[" + std::to_string(fd()) +
+		(V4L2_TYPE_IS_OUTPUT(bufferType_) ? ":out]" : ":cap]");
 }
 
 /**