diff -Nur a/configure.in b/configure.in
--- a/configure.in	2011-11-21 17:06:56.000000000 +0100
+++ b/configure.in	2013-05-01 13:48:30.599978971 +0200
@@ -6,7 +6,7 @@
 AC_CONFIG_SRCDIR([src/tw/tw.cpp])
 AC_CANONICAL_TARGET([])
 AM_INIT_AUTOMAKE(tripwire, 2.4.2.2)
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 
 dnl #################################
 dnl Cleanup Cruft Leftover From Patch