diff --git a/configure.ac b/configure.ac
index 5fda6eb..5581c32 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,7 @@
 # Process this file with autoconf to produce a configure script.
 AC_INIT([osmo-ggsn],[m4_esyscmd(./git-version-gen .tarball-version)],[osmocom-net-gprs@lists.osmocom.org])
 AC_CONFIG_SRCDIR([gtp/gtp.c])
-AM_CONFIG_HEADER([config.h])
-#AC_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 
 dnl *This* is the root dir, even if an install-sh exists in ../ or ../../
 AC_CONFIG_AUX_DIR([.])