diff --git a/configure.ac b/configure.ac
index 46984225..f50dba75 100644
--- a/configure.ac
+++ b/configure.ac
@@ -68,6 +68,8 @@ fi
 
 AC_DEFINE_UNQUOTED(STORAGEDIR, "${storagedir}",
 			[Directory for the storage files])
+AC_DEFINE_UNQUOTED(CONFIGDIR, "/etc/iwd", [Configuration directory])
+
 AC_CHECK_HEADERS(linux/types.h linux/if_alg.h)
 
 AC_PATH_PROG(A2X, [a2x], [], $PATH:/sbin:/usr/sbin)