diff --git a/src/Fl_cocoa.mm b/src/Fl_cocoa.mm
index b38c652d1..cf4853b7d 100644
--- a/src/Fl_cocoa.mm
+++ b/src/Fl_cocoa.mm
@@ -1295,7 +1295,7 @@ void fl_open_display() {
 	       selector:@selector(anywindowwillclosenotif:) 
 		   name:NSWindowWillCloseNotification 
 		 object:nil];
-    [[NSNotificationCenter defaultCenter] postNotificationName:NSApplicationDidChangeScreenParametersNotification object:NSApp];
+    main_screen_height = [[[NSScreen screens] objectAtIndex:0] frame].size.height;
   }
 }