1 files changed, 1 insertions, 0 deletions

diff --git a/src/msdos.c b/src/msdos.c
index 8a52e4968eb..e3426b05b38 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -509,6 +509,7 @@ IT_set_menu_bar_lines (window, n)
 {
   struct window *w = XWINDOW (window);
 
+  XSETFASTINT (w->last_modified, 0);
   XSETFASTINT (w->top, XFASTINT (w->top) + n);
   XSETFASTINT (w->height, XFASTINT (w->height) - n);