diff -up libetpan-1.1/configure.ac.automake-1_13 libetpan-1.1/configure.ac
--- libetpan-1.1/configure.ac.automake-1_13	2013-01-08 02:57:58.401504799 +0100
+++ libetpan-1.1/configure.ac	2013-01-08 03:10:16.315449177 +0100
@@ -26,7 +26,7 @@ AC_PREREQ(2.61)
 AC_INIT([libetpan],[maj_version.min_version],[libetpan-devel@lists.sourceforge.net])
 AC_CONFIG_SRCDIR([src/main/libetpan_version.h.in])
 AC_CONFIG_MACRO_DIR([m4])
-AM_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 AM_INIT_AUTOMAKE
 AM_MAINTAINER_MODE
 AC_CANONICAL_HOST