diff --git a/configure.ac.in b/configure.ac.in
index 03e0471..9cfdc45 100644
--- a/configure.ac.in
+++ b/configure.ac.in
@@ -19,7 +19,7 @@ AC_PREREQ([2.50])
 
 dnl init automake
 AM_INIT_AUTOMAKE([dist-bzip2])
-AM_CONFIG_HEADER([config.h])
+AC_CONFIG_HEADERS([config.h])
 dnl AC_DEFINE([WEBSITE], ["http://spuriousinterrupt.org/projects/xfvnc"],
 dnl           [Location of the xfvnc website])
 AM_MAINTAINER_MODE