diff --git a/tests/system-test/2-query/concat.py b/tests/system-test/2-query/concat.py
index 3fde897c3d19cf32d32321d2aab71875d6da3a1c..1410bb3fac5efc5f40fab61a6e792e94cf9946d5 100644
--- a/tests/system-test/2-query/concat.py
+++ b/tests/system-test/2-query/concat.py
@@ -147,7 +147,7 @@ class TDTestCase:
 
     def __test_error(self):
         tdLog.printNoPrefix("==========err sql condition check , must return error==========")
-        tbname = ["ct1", "ct2", "ct4", "t1", "stb1"]
+        tbname = ["ct1", "ct4", "t1", "stb1"]
 
         for tb in tbname:
             for errsql in self.__concat_err_check(tb):
diff --git a/tests/system-test/2-query/concat_ws.py b/tests/system-test/2-query/concat_ws.py
index 136429321bbd5690b8161e17c076dd172d8bcc43..73829a6f5d0fd9bf55c5529dd8e312546412502a 100644
--- a/tests/system-test/2-query/concat_ws.py
+++ b/tests/system-test/2-query/concat_ws.py
@@ -147,7 +147,7 @@ class TDTestCase:
 
     def __test_error(self):
         tdLog.printNoPrefix("==========err sql condition check , must return error==========")
-        tbname = ["ct1", "ct2", "ct4", "t1", "stb1"]
+        tbname = ["ct1", "ct4", "t1", "stb1"]
 
         for tb in tbname:
             for errsql in self.__concat_ws_err_check(tb):