diff --git a/syncer/ast_test.go b/syncer/ast_test.go
index 1428b56162..99bba93fa0 100644
--- a/syncer/ast_test.go
+++ b/syncer/ast_test.go
@@ -83,8 +83,11 @@ func (s *testSyncerSuite) testFailedCases(c *C) {
 
 		// cases parse failed and should be supported in the near future
 		// {"ALTER TABLE bar ENABLE KEYS, DISABLE KEYS", []string{"ALTER TABLE `bar` ENABLE KEYS", "ALTER TABLE `bar` DISABLE KEYS"}, false},
-		{"alter table bar ORDER BY id1, id2", []string{"alter table bar ORDER BY id1, id2"}, true}, // tidb not support ORDER BY.
-		{"alter table bar add index (`name`), add FOREIGN KEY (product_category, product_id) REFERENCES product(category, id) ON UPDATE CASCADE ON DELETE RESTRICT", []string{"alter table bar add index (`name`), add FOREIGN KEY (product_category, product_id) REFERENCES product(category, id) ON UPDATE CASCADE ON DELETE RESTRICT"}, true}, // tidb not support ON UPDATE CASCADE ON DELETE RESTRICT
+
+		// tidb not support ORDER BY.
+		{"alter table bar ORDER BY id1, id2", []string{"alter table bar ORDER BY id1, id2"}, true},
+		// tidb not support ON UPDATE CASCADE ON DELETE RESTRICT
+		{"alter table bar add index (`name`), add FOREIGN KEY (product_category, product_id) REFERENCES product(category, id) ON UPDATE CASCADE ON DELETE RESTRICT", []string{"alter table bar add index (`name`), add FOREIGN KEY (product_category, product_id) REFERENCES product(category, id) ON UPDATE CASCADE ON DELETE RESTRICT"}, true},
 	}
 
 	s.run(c, tests)