--- src/builtin.c.orig	Mon Dec 29 14:04:03 1997
+++ src/builtin.c	Mon Dec 29 14:04:14 1997
@@ -1078,7 +1078,7 @@
 {
   if (bad_argc (argv[0], argc, 2, 2))
     return;
-  mktemp (ARG (1));
+  mkstemp (ARG (1));
   obstack_grow (obs, ARG (1), strlen (ARG (1)));
 }
 
