diff --git a/uppsrc/CtrlCore/GtkWnd.cpp b/uppsrc/CtrlCore/GtkWnd.cpp
index a45008e5b..8aadf384e 100644
--- a/uppsrc/CtrlCore/GtkWnd.cpp
+++ b/uppsrc/CtrlCore/GtkWnd.cpp
@@ -430,9 +430,9 @@ void Ctrl::WndSetPos(const Rect& rect)
 	SweepConfigure(false); // Remove any previous GDK_CONFIGURE for this window
 	if(!this_ || !IsOpen())
 		return;
-//	gtk_window_move(gtk(), rect.left, rect.top);
-//	gtk_window_resize(gtk(), rect.GetWidth(), rect.GetHeight());
-	Rect m = GetFrameMargins();
+	Rect m(0, 0, 0, 0);
+	if(dynamic_cast<TopWindow *>(this))
+		m = GetFrameMargins();
 	gdk_window_move_resize(gdk(), rect.left - m.left, rect.top - m.top, rect.GetWidth(), rect.GetHeight());
 	int t0 = msecs();
 	do { // Wait up to 500ms for corresponding GDK_CONFIGURE to arrive