diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 27a560c9b9..847f6dec9f 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -245,7 +245,7 @@ bool wxWindowBase::CreateBase(wxWindowBase *parent,
     // does not as the user should be able to resize the window)
     //
     // note that we can't use IsTopLevel() from ctor
-    if ( !wxTopLevelWindows.Find((wxWindow *)this) )
+    if ( size != wxDefaultSize && !wxTopLevelWindows.Find((wxWindow *)this) )
         SetMinSize(size);
 
     SetName(name);