diff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h
index 05fecc8f..39a0ea6e 100644
--- a/src/libcamera/software_isp/debayer_cpu.h
+++ b/src/libcamera/software_isp/debayer_cpu.h
@@ -36,16 +36,16 @@ public:
 
 	int configure(const StreamConfiguration &inputCfg,
 		      const std::vector<std::reference_wrapper<const StreamConfiguration>> &outputCfgs,
-		      bool ccmEnabled);
-	Size patternSize(PixelFormat inputFormat);
-	std::vector<PixelFormat> formats(PixelFormat input);
+		      bool ccmEnabled) override;
+	Size patternSize(PixelFormat inputFormat) override;
+	std::vector<PixelFormat> formats(PixelFormat input) override;
 	std::tuple<unsigned int, unsigned int>
-	strideAndFrameSize(const PixelFormat &outputFormat, const Size &size);
-	void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, const DebayerParams &params);
-	int start();
-	void stop();
-	SizeRange sizes(PixelFormat inputFormat, const Size &inputSize);
-	const SharedFD &getStatsFD() { return stats_->getStatsFD(); }
+	strideAndFrameSize(const PixelFormat &outputFormat, const Size &size) override;
+	void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, const DebayerParams &params) override;
+	int start() override;
+	void stop() override;
+	SizeRange sizes(PixelFormat inputFormat, const Size &inputSize) override;
+	const SharedFD &getStatsFD() override { return stats_->getStatsFD(); }
 
 private:
 	friend class DebayerCpuThread;
diff --git a/src/libcamera/software_isp/debayer_egl.h b/src/libcamera/software_isp/debayer_egl.h
index bdde676f..d563bfa5 100644
--- a/src/libcamera/software_isp/debayer_egl.h
+++ b/src/libcamera/software_isp/debayer_egl.h
@@ -43,20 +43,20 @@ public:
 
 	int configure(const StreamConfiguration &inputCfg,
 		      const std::vector<std::reference_wrapper<const StreamConfiguration>> &outputCfgs,
-		      bool ccmEnabled);
+		      bool ccmEnabled) override;
 
-	Size patternSize(PixelFormat inputFormat);
+	Size patternSize(PixelFormat inputFormat) override;
 
-	std::vector<PixelFormat> formats(PixelFormat input);
-	std::tuple<unsigned int, unsigned int> strideAndFrameSize(const PixelFormat &outputFormat, const Size &size);
+	std::vector<PixelFormat> formats(PixelFormat input) override;
+	std::tuple<unsigned int, unsigned int> strideAndFrameSize(const PixelFormat &outputFormat, const Size &size) override;
 
-	void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, const DebayerParams &params);
-	int start();
-	void stop();
+	void process(uint32_t frame, FrameBuffer *input, FrameBuffer *output, const DebayerParams &params) override;
+	int start() override;
+	void stop() override;
 
-	const SharedFD &getStatsFD() { return stats_->getStatsFD(); }
+	const SharedFD &getStatsFD() override { return stats_->getStatsFD(); }
 
-	SizeRange sizes(PixelFormat inputFormat, const Size &inputSize);
+	SizeRange sizes(PixelFormat inputFormat, const Size &inputSize) override;
 
 private:
 	static int getInputConfig(PixelFormat inputFormat, DebayerInputConfig &config);