diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -13,7 +13,7 @@
 AC_INIT([LEMON], [lemon_version()], [etik-ol@cs.elte.hu], [lemon])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
-AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects])
+AM_INIT_AUTOMAKE([-Wall -Werror foreign subdir-objects nostdinc])
 AC_CONFIG_SRCDIR([lemon/list_graph.h])
 AC_CONFIG_HEADERS([config.h lemon/config.h])