diff --git a/src/plugins/debugger/qml/qmlengine.cpp b/src/plugins/debugger/qml/qmlengine.cpp
index f5f87fd3054..efdd40b30f0 100644
--- a/src/plugins/debugger/qml/qmlengine.cpp
+++ b/src/plugins/debugger/qml/qmlengine.cpp
@@ -146,8 +146,8 @@ public:
           inspectorAgent(engine, connection)
     {}
 
-    void messageReceived(const QByteArray &data);
-    void stateChanged(State state);
+    void messageReceived(const QByteArray &data) override;
+    void stateChanged(State state) override;
 
     void continueDebugging(StepAction stepAction);