diff --git a/tests/system-test/2-query/upper.py b/tests/system-test/2-query/upper.py
index a4fd3cf661..ea490304ac 100644
--- a/tests/system-test/2-query/upper.py
+++ b/tests/system-test/2-query/upper.py
@@ -39,7 +39,7 @@ class TDTestCase:
             upper_condition.extend( f"cast( {char_col} + {char_col_2} as binary(32) ) " for char_col_2 in CHAR_COL )
             upper_condition.extend( f"cast( {char_col} + {un_char_col} as binary(32) ) " for un_char_col in UN_CHAR_COL )
 
-        upper_condition.append('test1234!@#$%^&*():"><?/.,][}{')
+        upper_condition.append('"test1234!@#$%^&*():"><?/.,][}{"')
 
         return upper_condition