diff --git a/src/platform/qt/AudioProcessorQt.h b/src/platform/qt/AudioProcessorQt.h
index 52d7b606c..05aaae93d 100644
--- a/src/platform/qt/AudioProcessorQt.h
+++ b/src/platform/qt/AudioProcessorQt.h
@@ -19,15 +19,15 @@ Q_OBJECT
 public:
 	AudioProcessorQt(QObject* parent = nullptr);
 
-	virtual void setInput(GBAThread* input);
+	virtual void setInput(GBAThread* input) override;
 	virtual unsigned sampleRate() const override;
 
 public slots:
-	virtual void start();
-	virtual void pause();
+	virtual void start() override;
+	virtual void pause() override;
 
-	virtual void setBufferSamples(int samples);
-	virtual void inputParametersChanged();
+	virtual void setBufferSamples(int samples) override;
+	virtual void inputParametersChanged() override;
 
 	virtual void requestSampleRate(unsigned) override;
 
diff --git a/src/platform/qt/AudioProcessorSDL.h b/src/platform/qt/AudioProcessorSDL.h
index c98d00473..bc9b43581 100644
--- a/src/platform/qt/AudioProcessorSDL.h
+++ b/src/platform/qt/AudioProcessorSDL.h
@@ -25,11 +25,11 @@ public:
 	virtual unsigned sampleRate() const override;
 
 public slots:
-	virtual void start();
-	virtual void pause();
+	virtual void start() override;
+	virtual void pause() override;
 
-	virtual void setBufferSamples(int samples);
-	virtual void inputParametersChanged();
+	virtual void setBufferSamples(int samples) override;
+	virtual void inputParametersChanged() override;
 
 	virtual void requestSampleRate(unsigned) override;
 
diff --git a/src/platform/qt/Display.h b/src/platform/qt/Display.h
index 3e6d738f2..7b3605ab2 100644
--- a/src/platform/qt/Display.h
+++ b/src/platform/qt/Display.h
@@ -52,7 +52,7 @@ public slots:
 	void showMessage(const QString& message);
 
 protected:
-	void resizeEvent(QResizeEvent*);
+	virtual void resizeEvent(QResizeEvent*) override;
 	virtual void mouseMoveEvent(QMouseEvent*) override;
 
 	MessagePainter* messagePainter() { return &m_messagePainter; }
diff --git a/src/platform/qt/SensorView.h b/src/platform/qt/SensorView.h
index 9313f89fb..1eb4416a8 100644
--- a/src/platform/qt/SensorView.h
+++ b/src/platform/qt/SensorView.h
@@ -30,7 +30,7 @@ public:
 
 protected:
 	bool eventFilter(QObject*, QEvent* event) override;
-	bool event(QEvent* event);
+	bool event(QEvent* event) override;
 
 private slots:
 	void updateSensors();