===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/window-copy.c,v
retrieving revision 1.54
retrieving revision 1.55
diff -u -r1.54 -r1.55
--- src/usr.bin/tmux/window-copy.c	2010/04/06 21:35:44	1.54
+++ src/usr.bin/tmux/window-copy.c	2010/04/28 18:19:16	1.55
@@ -1,4 +1,4 @@
-/* $OpenBSD: window-copy.c,v 1.54 2010/04/06 21:35:44 nicm Exp $ */
+/* $OpenBSD: window-copy.c,v 1.55 2010/04/28 18:19:16 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -340,6 +340,8 @@
 		data->cy = sy - 1;
 	if (data->cx > sx)
 		data->cx = sx;
+	if (data->oy > screen_hsize(data->backing))
+		data->oy = screen_hsize(data->backing);
 
 	window_copy_clear_selection(wp);