diff -Naur a/configure.ac b/configure.ac
--- a/configure.ac	2011-07-04 10:58:29.000000000 +0200
+++ b/configure.ac	2013-05-05 12:38:33.835871674 +0200
@@ -2,7 +2,7 @@
 AC_CONFIG_SRCDIR(prog/aspell.cpp)
 AC_CANONICAL_SYSTEM
 AM_INIT_AUTOMAKE
-AM_CONFIG_HEADER(gen/settings.h)
+AC_CONFIG_HEADERS(gen/settings.h)
 
 AM_MAINTAINER_MODE