diff --git a/configure b/configure
index 214318b211..618b873411 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # $OpenLDAP$
-# from OpenLDAP: pkg/ldap/configure.in,v 1.256 1999/09/10 00:10:20 kdz Exp  
+# from OpenLDAP: pkg/ldap/configure.in,v 1.223.2.3 1999/09/10 20:25:17 kdz Exp  
 
 # Copyright 1998,1999 The OpenLDAP Foundation.  All Rights Reserved.
 # 
diff --git a/configure.in b/configure.in
index e08413ddc4..307ee53902 100644
--- a/configure.in
+++ b/configure.in
@@ -44,10 +44,11 @@ AC_SUBST(VERSION)
 AC_DEFINE_UNQUOTED(OPENLDAP_PACKAGE,"$PACKAGE",Package)
 AC_DEFINE_UNQUOTED(OPENLDAP_VERSION,"$VERSION",Version)
 
-dnl We use autoconf features new to 2.13.
+dnl require: dnl autoconf 2.13.1
+dnl also:
 dnl aclocal.m4 should be built using aclocal from automake 1.4
 dnl libtool 1.3.3 should be installed.
-AC_PREREQ(2.13)dnl Required Autoconf version
+AC_PREREQ(2.13.1)dnl Required Autoconf version
 
 AC_CONFIG_HEADER(include/portable.h include/ldap_features.h include/lber_types.h)dnl