diff --git a/PC/config.h b/PC/config.h
index 5010cc01df0..a8a565efda0 100644
--- a/PC/config.h
+++ b/PC/config.h
@@ -359,6 +359,9 @@ typedef int pid_t;
 /* Define if you have lstat.  */
 /* #undef HAVE_LSTAT */
 
+/* Define if you have the mktime function.  */
+#define HAVE_MKTIME
+
 /* Define if you have nice.  */
 /* #undef HAVE_NICE */