1 files changed, 1 insertions, 1 deletions

diff --git a/src/undo.c b/src/undo.c
index 80aff50d18a..142960545a7 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -500,7 +500,7 @@ Return what remains of the list.  */)
                 {
                   /* Element (t high . low) records previous modtime.  */
                   Lisp_Object high, low;
-                  int mod_time;
+                  time_t mod_time;
                   struct buffer *base_buffer = current_buffer;
 
                   high = Fcar (cdr);