diff --git a/src/undo.c b/src/undo.c
index 71e62a1..bb5c73d 100644
--- a/src/undo.c
+++ b/src/undo.c
@@ -534,7 +534,7 @@
 
 	uhp->uh_seq = ++curbuf->b_u_seq_last;
 	curbuf->b_u_seq_cur = uhp->uh_seq;
-	uhp->uh_time = time(NULL);
+	uhp->uh_time = vim_time();
 	uhp->uh_save_nr = 0;
 	curbuf->b_u_time_cur = uhp->uh_time + 1;
 
@@ -2350,7 +2350,7 @@
 	else
 	{
 	    if (dosec)
-		closest = (long)(time(NULL) - starttime + 1);
+		closest = (long)(vim_time() - starttime + 1);
 	    else if (dofile)
 		closest = curbuf->b_u_save_nr_last + 2;
 	    else
@@ -3104,10 +3104,10 @@
 #ifdef HAVE_STRFTIME
     struct tm	*curtime;
 
-    if (time(NULL) - tt >= 100)
+    if (vim_time() - tt >= 100)
     {
 	curtime = localtime(&tt);
-	if (time(NULL) - tt < (60L * 60L * 12L))
+	if (vim_time() - tt < (60L * 60L * 12L))
 	    /* within 12 hours */
 	    (void)strftime((char *)buf, buflen, "%H:%M:%S", curtime);
 	else
@@ -3117,7 +3117,7 @@
     else
 #endif
 	vim_snprintf((char *)buf, buflen, _("%ld seconds ago"),
-						     (long)(time(NULL) - tt));
+						      (long)(vim_time() - tt));
 }
 
 /*