diff --git a/src/mac/carbon/dcclient.cpp b/src/mac/carbon/dcclient.cpp
index 710a8f89f4..2d75ff390e 100644
--- a/src/mac/carbon/dcclient.cpp
+++ b/src/mac/carbon/dcclient.cpp
@@ -114,7 +114,7 @@ wxWindowDC::wxWindowDC(wxWindow *window)
     window->MacWindowToRootWindow( &x , &y ) ;
     m_macLocalOrigin.x = x ;
     m_macLocalOrigin.y = y ;
-    CopyRgn( (RgnHandle) window->MacGetVisibleRegion().GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
+    CopyRgn( (RgnHandle) window->MacGetVisibleRegion(true).GetWXHRGN() , (RgnHandle) m_macBoundaryClipRgn ) ;
     OffsetRgn( (RgnHandle) m_macBoundaryClipRgn , m_macLocalOrigin.x , m_macLocalOrigin.y ) ;
     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
     m_macPort = UMAGetWindowPort( windowref ) ;