diff --git a/include/types/acl.h b/include/types/acl.h
index 908b0e5..c5c2824 100644
--- a/include/types/acl.h
+++ b/include/types/acl.h
@@ -92,6 +92,7 @@
 struct acl_keyword {
 	const char *kw;
 	char *fetch_kw;
+	int match_type; /* Contain PAT_MATCH_* */
 	int (*parse)(const char *text, struct pattern *pattern, char **err);
 	int (*index)(struct pattern_expr *expr, struct pattern *pattern, char **err);
 	void (*delete)(struct pattern_expr *expr, struct pat_ref_elt *);