diff --git a/ChangeLog b/ChangeLog
index c7a4011db..87619cb39 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2004-01-22  Pavel Roskin  <proski@gnu.org>
+
+	* configure.in: Rename to ...
+	* configure.ac: ... this.
+
 2003-12-30  David Martin  <dmartina@excite.com>
 
 	* doc/mc.1.in: Synchronized latest fixes (long options) and
diff --git a/configure.in b/configure.ac
similarity index 100%
rename from configure.in
rename to configure.ac