diff --git a/Engine/source/gfx/gl/gfxGLWindowTarget.h b/Engine/source/gfx/gl/gfxGLWindowTarget.h
index 4baa6a53f..af368e192 100644
--- a/Engine/source/gfx/gl/gfxGLWindowTarget.h
+++ b/Engine/source/gfx/gl/gfxGLWindowTarget.h
@@ -30,6 +30,8 @@ class GFXGLWindowTarget : public GFXWindowTarget
 public:
 
    GFXGLWindowTarget(PlatformWindow *win, GFXDevice *d);
+   ~GFXGLWindowTarget();
+
    const Point2I getSize() 
    { 
       return mWindow->getClientExtent();
@@ -64,4 +66,4 @@ private:
    void _WindowPresent();
 };
 
-#endif
\ No newline at end of file
+#endif