diff --git a/ChangeLog b/ChangeLog
index 840ee3757..bc31a06cd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2002-11-01  Christian Neumair  <chris@gnome-de.org>
+
+	* configure.in: We want at least autoconf 2.5.
+
 2002-10-29  Havoc Pennington  <hp@pobox.com>
 
 	* configure.in: 2.4.3, why not
diff --git a/configure.in b/configure.in
index f1bc14ac5..ecde2b0a3 100644
--- a/configure.in
+++ b/configure.in
@@ -1,3 +1,4 @@
+AC_PREREQ(2.50)
 AC_INIT(src/display.c)
 
 AM_CONFIG_HEADER(config.h)