===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/cmd-display-menu.c,v
retrieving revision 1.24
retrieving revision 1.25
diff -u -r1.24 -r1.25
--- src/usr.bin/tmux/cmd-display-menu.c	2021/06/10 07:22:06	1.24
+++ src/usr.bin/tmux/cmd-display-menu.c	2021/07/08 11:14:53	1.25
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-display-menu.c,v 1.24 2021/06/10 07:22:06 nicm Exp $ */
+/* $OpenBSD: cmd-display-menu.c,v 1.25 2021/07/08 11:14:53 nicm Exp $ */
 
 /*
  * Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -176,7 +176,7 @@
 			format_add(ft, "popup_mouse_centre_y", "%ld", n);
 		n = (long)event->m.y + h;
 		if (n + h >= tty->sy)
-			format_add(ft, "popup_mouse_top", "%u", tty->sy - h);
+			format_add(ft, "popup_mouse_top", "%u", tty->sy - 1);
 		else
 			format_add(ft, "popup_mouse_top", "%ld", n);
 		n = event->m.y - h;