1 files changed, 3 insertions, 4 deletions

diff --git a/src/undo.c b/src/undo.c
index d8711882fbf..234b8510f0a 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -229,10 +229,9 @@ record_first_change (void)
   if (base_buffer->base_buffer)
     base_buffer = base_buffer->base_buffer;
 
-  bset_undo_list
-    (current_buffer,
-     Fcons (Fcons (Qt, make_lisp_time (base_buffer->modtime)),
-            BVAR (current_buffer, undo_list)));
+  bset_undo_list (current_buffer,
+                  Fcons (Fcons (Qt, Fvisited_file_modtime ()),
+                         BVAR (current_buffer, undo_list)));
 }
 
 /* Record a change in property PROP (whose old value was VAL)