diff --git a/tests/system-test/2-query/elapsed.py b/tests/system-test/2-query/elapsed.py
index d2f1331e00..333c60286e 100644
--- a/tests/system-test/2-query/elapsed.py
+++ b/tests/system-test/2-query/elapsed.py
@@ -894,7 +894,7 @@ class TDTestCase:
             tdSql.query(sql_common)
             results= query_datas[0]
             if operator == "+":
-                for data in query_datas[1:]: 
+                for data in query_datas[1:]:
                     results += data
                 tdSql.checkData(0,0,results)