diff --git a/acinclude.m4 b/acinclude.m4
index 2a93f4a..49550f1 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1,4 +1,4 @@
-AC_DEFUN(SAVE_UTIL_VERSION, [
+AC_DEFUN([SAVE_UTIL_VERSION], [
 SND_UTIL_VERSION=$VERSION
 echo $VERSION > $srcdir/version
 AC_DEFINE_UNQUOTED(VERSION, "$SND_UTIL_VERSION", [ALSA util version])