diff --git a/include/libcamera/internal/camera_sensor.h b/include/libcamera/internal/camera_sensor.h
index d79bd9ce9..eb464114c 100644
--- a/include/libcamera/internal/camera_sensor.h
+++ b/include/libcamera/internal/camera_sensor.h
@@ -66,7 +66,7 @@ public:
 	int sensorInfo(CameraSensorInfo *info) const;
 
 protected:
-	std::string logPrefix() const;
+	std::string logPrefix() const override;
 
 private:
 	const MediaEntity *entity_;
diff --git a/include/libcamera/internal/media_device.h b/include/libcamera/internal/media_device.h
index 19af059d9..20e397cca 100644
--- a/include/libcamera/internal/media_device.h
+++ b/include/libcamera/internal/media_device.h
@@ -55,7 +55,7 @@ public:
 	Signal<MediaDevice *> disconnected;
 
 protected:
-	std::string logPrefix() const;
+	std::string logPrefix() const override;
 
 private:
 	int open();
diff --git a/include/libcamera/internal/v4l2_subdevice.h b/include/libcamera/internal/v4l2_subdevice.h
index 1be454f0d..07dc93d98 100644
--- a/include/libcamera/internal/v4l2_subdevice.h
+++ b/include/libcamera/internal/v4l2_subdevice.h
@@ -62,7 +62,7 @@ public:
 					     const std::string &entity);
 
 protected:
-	std::string logPrefix() const;
+	std::string logPrefix() const override;
 
 private:
 	std::vector<unsigned int> enumPadCodes(unsigned int pad);
diff --git a/include/libcamera/internal/v4l2_videodevice.h b/include/libcamera/internal/v4l2_videodevice.h
index dc2595235..cbaee6149 100644
--- a/include/libcamera/internal/v4l2_videodevice.h
+++ b/include/libcamera/internal/v4l2_videodevice.h
@@ -213,7 +213,7 @@ public:
 	V4L2PixelFormat toV4L2PixelFormat(const PixelFormat &pixelFormat);
 
 protected:
-	std::string logPrefix() const;
+	std::string logPrefix() const override;
 
 private:
 	int getFormatMeta(V4L2DeviceFormat *format);