diff --git a/tests/system-test/0-others/udf_create.py b/tests/system-test/0-others/udf_create.py
index e53289e92e..3e4ca86e52 100644
--- a/tests/system-test/0-others/udf_create.py
+++ b/tests/system-test/0-others/udf_create.py
@@ -195,7 +195,7 @@ class TDTestCase:
         # scalar functions
 
         # udf1_dup
-        tdSql.query("select num1 , udf1(num1) ,udf1_dup(num1) from tb")
+        tdSql.query("select udf1(num1) ,udf1_dup(num1) from tb")
         tdSql.checkData(1,0,1)
         tdSql.checkData(1,1,2)
         tdSql.checkData(2,0,1)