diff --git a/m4/nls.m4 b/m4/nls.m4
index 36bc49317..7e4f7da68 100644
--- a/m4/nls.m4
+++ b/m4/nls.m4
@@ -1,4 +1,4 @@
-# nls.m4 serial 1 (gettext-0.12)
+# nls.m4 serial 2
 dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General
diff --git a/m4/po.m4 b/m4/po.m4
index a1b579b71..11143d238 100644
--- a/m4/po.m4
+++ b/m4/po.m4
@@ -1,4 +1,4 @@
-# po.m4 serial 1 (gettext-0.12)
+# po.m4 serial 2
 dnl Copyright (C) 1995-2003 Free Software Foundation, Inc.
 dnl This file is free software, distributed under the terms of the GNU
 dnl General Public License.  As a special exception to the GNU General