diff --git a/src/game/game_instance.hpp b/src/game/game_instance.hpp
--- a/src/game/game_instance.hpp
+++ b/src/game/game_instance.hpp
@@ -25,14 +25,14 @@ public:
 	 */
 	void Initialize(class GameInfo *info);
 
-	/* virtual */ int GetSetting(const char *name);
-	/* virtual */ ScriptInfo *FindLibrary(const char *library, int version);
+	int GetSetting(const char *name) override;
+	ScriptInfo *FindLibrary(const char *library, int version) override;
 
 private:
-	/* virtual */ void RegisterAPI();
-	/* virtual */ void Died();
-	/* virtual */ CommandCallback *GetDoCommandCallback();
-	/* virtual */ void LoadDummyScript() {}
+	void RegisterAPI() override;
+	void Died() override;
+	CommandCallback *GetDoCommandCallback() override;
+	void LoadDummyScript() override {}
 };
 
 #endif /* GAME_INSTANCE_HPP */