diff --git a/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaContext.h b/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaContext.h
index 00e3f7eba05..56abadc20f1 100644
--- a/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaContext.h
+++ b/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaContext.h
@@ -43,17 +43,17 @@ namespace Ogre {
         virtual ~CocoaContext();
         
         /** See GLContext */
-        virtual void setCurrent();
+        void setCurrent() override;
         /**
          * This is called before another context is made current. By default,
          * nothing is done here.
          */
-        virtual void endCurrent();
+        void endCurrent() override;
         /** Create a new context based on the same window/pbuffer as this
             context - mostly useful for additional threads.
         @note The caller is responsible for deleting the returned context.
         */
-        virtual GLContext* clone() const;
+        GLContext* clone() const override;
 
         /** Grab the NSOpenGLContext if it exists */
         NSOpenGLContext* getContext();
diff --git a/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaWindow.h b/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaWindow.h
index 3ddeb923779..6bb60fbbeb8 100644
--- a/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaWindow.h
+++ b/RenderSystems/GLSupport/include/OSX/OgreOSXCocoaWindow.h
@@ -69,39 +69,39 @@ namespace Ogre {
         NSView* ogreView() const { return mView; }
         NSWindow* ogreWindow() const { return mWindow; }
         NSOpenGLContext* nsopenGLContext() const { return mGLContext; }
-        GLContext* getContext() const { return mContext; }
+        GLContext* getContext() const override { return mContext; }
         void createWithView(OgreGLView *view);
 
         /** @copydoc see RenderWindow::getViewPointToPixelScale */
-        float getViewPointToPixelScale();
+        float getViewPointToPixelScale() override;
         /** Overridden - see RenderWindow */
         void create(const String& name, unsigned int widthPt, unsigned int heightPt,
-                bool fullScreen, const NameValuePairList *miscParams);
+                bool fullScreen, const NameValuePairList *miscParams) override;
         /** Overridden - see RenderWindow */
-        void destroy(void);
+        void destroy(void) override;
         /** @copydoc see RenderWindow::setHidden */
-        void setHidden(bool hidden);
+        void setHidden(bool hidden) override;
         /** @copydoc see RenderWindow::setVSyncEnabled */
-        void setVSyncEnabled(bool vsync);
+        void setVSyncEnabled(bool vsync) override;
         /** Overridden - see RenderWindow */
-        void reposition(int leftPt, int topPt);
+        void reposition(int leftPt, int topPt) override;
         /** Overridden - see RenderWindow */
-        void resize(unsigned int widthPt, unsigned int heightPt);
+        void resize(unsigned int widthPt, unsigned int heightPt) override;
         /** Overridden - see RenderWindow */
-        void swapBuffers();
+        void swapBuffers() override;
         /** Overridden - see RenderWindow */
-        virtual void setFullscreen(bool fullScreen, unsigned int widthPt, unsigned int heightPt);
+        void setFullscreen(bool fullScreen, unsigned int widthPt, unsigned int heightPt) override;
         /** Overridden - see RenderWindow */
-        virtual unsigned int getWidth(void) const;
+        unsigned int getWidth(void) const override;
         /** Overridden - see RenderWindow */
-        virtual unsigned int getHeight(void) const;
+        unsigned int getHeight(void) const override;
         /** Overridden - see RenderWindow */
-        void windowMovedOrResized(void);
+        void windowMovedOrResized(void) override;
         void windowHasResized(void);
         void createNewWindow(unsigned int width, unsigned int height, String title);
         void createWindowFromExternal(NSView *viewRef);
 
-        void getCustomAttribute( const String& name, void* pData );
+        void getCustomAttribute( const String& name, void* pData ) override;
     };
 }
 
diff --git a/RenderSystems/GLSupport/include/OSX/OgreOSXGLSupport.h b/RenderSystems/GLSupport/include/OSX/OgreOSXGLSupport.h
index 3426d41a123..05865b9f0c8 100644
--- a/RenderSystems/GLSupport/include/OSX/OgreOSXGLSupport.h
+++ b/RenderSystems/GLSupport/include/OSX/OgreOSXGLSupport.h
@@ -41,26 +41,26 @@ class OSXGLSupport : public GLNativeSupport
     OSXGLSupport(int profile) : GLNativeSupport(profile) {}
     ~OSXGLSupport() {}
 
-    ConfigOptionMap getConfigOptions();
+    ConfigOptionMap getConfigOptions() override;
     
     /// @copydoc RenderSystem::createRenderWindow
-    virtual RenderWindow* newWindow( const String &name, unsigned int width, unsigned int height, 
-        bool fullScreen, const NameValuePairList *miscParams = 0 );
+    RenderWindow* newWindow( const String &name, unsigned int width, unsigned int height,
+        bool fullScreen, const NameValuePairList *miscParams = 0 ) override;
     
     /**
     * Start anything special
     */
-    void start();
+    void start() override;
 
     /**
     * Stop anything special
     */
-    void stop();
+    void stop() override;
 
     /**
     * Get the address of a function
     */
-    void* getProcAddress( const char *name ) const;
+    void* getProcAddress( const char *name ) const override;
     
     // Core Foundation Array callback function for sorting, must be static for the function ptr
     static CFComparisonResult _compareModes (const void *val1, const void *val2, void *context);