diff --git a/tests/system-test/2-query/json_tag.py b/tests/system-test/2-query/json_tag.py
index 84aab3d624..9e48f7d45a 100644
--- a/tests/system-test/2-query/json_tag.py
+++ b/tests/system-test/2-query/json_tag.py
@@ -687,8 +687,8 @@ class TDTestCase:
         # to_json()
         tdSql.query("select to_json('{\"abc\":123}') from jsons1_1")
         tdSql.checkRows(2)
-        # tdSql.checkData(0, 0, '{"abc":123}')
-        # tdSql.checkData(1, 0, '{"abc":123}')
+        tdSql.checkData(0, 0, '{"abc":123}')
+        tdSql.checkData(1, 0, '{"abc":123}')
         tdSql.query("select to_json('null') from jsons1_1")
         tdSql.checkRows(2)
         tdSql.checkData(0, 0, 'null')