diff --git a/vcl/inc/window.h b/vcl/inc/window.h
index 8abe5d1fc644..7c4d116ffa58 100644
--- a/vcl/inc/window.h
+++ b/vcl/inc/window.h
@@ -118,7 +118,6 @@ struct ImplFrameData
     ImplFontCache*      mpFontCache;            //< Font-Cache for this frame
     sal_Int32           mnDPIX;                 //< Original Screen Resolution
     sal_Int32           mnDPIY;                 //< Original Screen Resolution
-    ImplMapRes          maMapUnitRes;           //< for LogicUnitToPixel
     ImplSVEvent *       mnFocusId;              //< FocusId for PostUserLink
     ImplSVEvent *       mnMouseMoveId;          //< MoveId for PostUserLink
     long                mnLastMouseX;           //< last x mouse position