diff --git a/include/proto/auth.h b/include/proto/auth.h
index 8c060b5..c7b2abc 100644
--- a/include/proto/auth.h
+++ b/include/proto/auth.h
@@ -22,6 +22,7 @@
 unsigned int auth_resolve_groups(struct userlist *l, char *groups);
 void userlist_free(struct userlist *ul);
 int acl_match_auth(struct acl_test *test, struct acl_pattern *pattern);
+int check_user(struct userlist *ul, unsigned int group_mask, const char *user, const char *pass);
 
 #endif /* _PROTO_AUTH_H */
 
diff --git a/include/types/acl.h b/include/types/acl.h
index 748180c..4d79ee7 100644
--- a/include/types/acl.h
+++ b/include/types/acl.h
@@ -88,7 +88,6 @@
 	ACL_TEST_F_RES_PASS   = 1 << 10,/* with SET_RESULT, sets result to PASS (defaults to FAIL) */
 	ACL_TEST_F_SET_RES_PASS = (ACL_TEST_F_RES_SET|ACL_TEST_F_RES_PASS),  /* sets result to PASS */
 	ACL_TEST_F_SET_RES_FAIL = (ACL_TEST_F_RES_SET),                      /* sets result to FAIL */
-	ACL_TEST_F_NULL_MATCH = 1 << 11,/* call expr->kw->match with NULL pattern if expr->patterns is empty */
 };
 
 /* ACLs can be evaluated on requests and on responses, and on partial or complete data */