diff --git a/rfbplayer/ChoosePixelFormatDialog.h b/rfbplayer/ChoosePixelFormatDialog.h
index b85d4d9..130da4b 100644
--- a/rfbplayer/ChoosePixelFormatDialog.h
+++ b/rfbplayer/ChoosePixelFormatDialog.h
@@ -26,8 +26,8 @@
     pf(_pf), combo(0) {}
   // - Show the dialog and return true if OK was clicked,
   //   false in case of error or Cancel
-  virtual bool showDialog() {
-    return Dialog::showDialog(MAKEINTRESOURCE(IDD_PIXELFORMAT));
+  virtual bool showDialog(HWND parent) {
+    return Dialog::showDialog(MAKEINTRESOURCE(IDD_PIXELFORMAT), parent);
   }
   const long getPF() const {return pf;}
 protected: