diff --git a/reactos/win32ss/gdi/ntgdi/cliprgn.c b/reactos/win32ss/gdi/ntgdi/cliprgn.c
index 67fa4dfa9dd..326ed3744af 100644
--- a/reactos/win32ss/gdi/ntgdi/cliprgn.c
+++ b/reactos/win32ss/gdi/ntgdi/cliprgn.c
@@ -60,6 +60,8 @@ IntGdiExtSelectClipRgn(
         if (!dc->dclevel.prgnClip)
             dc->dclevel.prgnClip = IntSysCreateRectpRgn(0, 0, 0, 0);
 
+        dc->fs |= DC_FLAG_DIRTY_RAO;
+
         return IntGdiCombineRgn(dc->dclevel.prgnClip, prgn, NULL, RGN_COPY);
     }