diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 35aa3f6242..60f6e36bab 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -2137,16 +2137,11 @@ void gtk_window_size_callback( GtkWidget *WXUNUSED(widget),
     if ((client_width == win->m_oldClientWidth) && (client_height == win->m_oldClientHeight))
         return;
 
-#if 0
-        wxPrintf( wxT("size_allocate ") );
-        if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
-            wxPrintf( win->GetClassInfo()->GetClassName() );
-        wxPrintf( wxT(" %d %d %d %d\n"),
-                alloc->x,
-                alloc->y,
-                alloc->width,
-                alloc->height );
-#endif
+    if ( !client_width && !client_height )
+    {
+        // the window is currently unmapped, don't generate size events
+        return;
+    }
 
     win->m_oldClientWidth = client_width;
     win->m_oldClientHeight = client_height;