--- irssi-0.8.15/irssi-idea/configure.in~	2002-11-24 14:12:56.000000000 +0100
+++ irssi-0.8.15/irssi-idea/configure.in	2013-06-09 10:46:16.317003740 +0200
@@ -1,6 +1,6 @@
 AC_INIT(src)
 
-AM_CONFIG_HEADER(config-plugin.h)
+AC_CONFIG_HEADERS(config-plugin.h)
 AM_INIT_AUTOMAKE(irssi-idea, 0.1.46)
 
 AM_MAINTAINER_MODE