diff --git a/src/wxwindow/src/msw/wx_cmdlg.cxx b/src/wxwindow/src/msw/wx_cmdlg.cxx
index d3cd7865a4..7001809285 100644
--- a/src/wxwindow/src/msw/wx_cmdlg.cxx
+++ b/src/wxwindow/src/msw/wx_cmdlg.cxx
@@ -189,6 +189,10 @@ int wxMessageBox(char *message, char *caption, long type,
 }
 
 
+#ifdef MZ_PRECISE_GC
+START_XFORM_SKIP;
+#endif
+
 static BOOL DoGetSaveFileName(OPENFILENAMEW *of, HWND parent)
 {
   if (!of->hwndOwner)
@@ -228,6 +232,10 @@ static BOOL DoGetDir(BROWSEINFOW *b, HWND parent)
     return 0;
 }
 
+#ifdef MZ_PRECISE_GC
+START_XFORM_SKIP;
+#endif
+
 static int set_init_dir;
 extern void MrEdSyncCurrentDir(void);
 
diff --git a/src/wxwindow/src/msw/wx_dc.cxx b/src/wxwindow/src/msw/wx_dc.cxx
index 2e96c13026..13997f5600 100644
--- a/src/wxwindow/src/msw/wx_dc.cxx
+++ b/src/wxwindow/src/msw/wx_dc.cxx
@@ -2977,6 +2977,10 @@ Bool wxCanvasDC::GCBlit(double xdest, double ydest, double width, double height,
     return FALSE;
 }
 
+#ifdef MZ_PRECISE_GC
+START_XFORM_SKIP;
+#endif
+
 static BOOL DoPrintDlg(PRINTDLG *pd, HWND parent)
 {
   if (!pd->hwndOwner)
@@ -2985,6 +2989,10 @@ static BOOL DoPrintDlg(PRINTDLG *pd, HWND parent)
   return PrintDlg(pd);
 }
 
+#ifdef MZ_PRECISE_GC
+END_XFORM_SKIP;
+#endif
+
 wxPrinterDC::wxPrinterDC(wxWindow *parent, char *driver_name, char *device_name, char *file, Bool interactive)
 {
   HWND hwnd = NULL;