diff --git a/src/mmg/mux_dialog.cpp b/src/mmg/mux_dialog.cpp
index 7915e84ce..9e907a176 100644
--- a/src/mmg/mux_dialog.cpp
+++ b/src/mmg/mux_dialog.cpp
@@ -88,11 +88,7 @@ mux_dialog::mux_dialog(wxWindow *parent)
   siz_all->Add(siz_buttons, 0, wxGROW | wxALL, 10);
 
   SetSizerAndFit(siz_all);
-#ifdef SYS_WINDOWS
-  SetSize(wxSize(700, 560));
-#else
   SetSize(wxSize(720, 520));
-#endif
 }
 
 void