diff --git a/chart2/source/view/inc/GL3DRenderer.hxx b/chart2/source/view/inc/GL3DRenderer.hxx
index 5f66203a13ce..4782f5047482 100644
--- a/chart2/source/view/inc/GL3DRenderer.hxx
+++ b/chart2/source/view/inc/GL3DRenderer.hxx
@@ -160,7 +160,7 @@ public:
 
     void LoadShaders();
     void init();
-    bool isOpenGLInitialized();
+    virtual bool isOpenGLInitialized() SAL_OVERRIDE;
     void Set3DSenceInfo(sal_Int32 color = 255, bool twoSidesLighting = true);
     void SetLightInfo(bool lightOn, sal_Int32 color, const glm::vec4& direction);
     void AddShapePolygon3DObject(sal_Int32 color, bool lineOnly, sal_Int32 lineColor,