diff -Naur indicator-session-12.10.4.orig/configure.ac indicator-session-12.10.4/configure.ac
--- indicator-session-12.10.4.orig/configure.ac	2012-10-03 18:39:45.000000000 +0200
+++ indicator-session-12.10.4/configure.ac	2013-03-10 16:36:09.975334792 +0100
@@ -3,7 +3,7 @@
 
 AC_PREREQ(2.53)
 
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS(config.h)
 AM_INIT_AUTOMAKE(indicator-session, 12.10.4)
 
 AM_MAINTAINER_MODE