diff --git a/tests/system-test/2-query/abs.py b/tests/system-test/2-query/abs.py
index 2f767769af6576daada822b0d9608efbf4c249e1..c9fc025b9799863a5460fa077d20db88d92a803e 100644
--- a/tests/system-test/2-query/abs.py
+++ b/tests/system-test/2-query/abs.py
@@ -566,8 +566,8 @@ class TDTestCase:
         tdSql.query(f"select t1 from {dbname}.stb1 where abs(c1+t1)=1")
         tdSql.checkRows(1)
         tdSql.checkData(0,0,0)
-        
-        tdSql.query("select abs(c1) from (select ts , c1 ,t1 from stb1)")
+
+        tdSql.query(f"select abs(c1) from (select ts , c1 ,t1 from {dbname}.stb1)")
         tdSql.checkRows(25)
 
         tdSql.query(
diff --git a/tests/system-test/2-query/avg.py b/tests/system-test/2-query/avg.py
index 470eb7b4ab8920e8247c319b644c8c81c7ac5e96..ea7c3329eaf0f3f888589d8b26d66eba522f0474 100644
--- a/tests/system-test/2-query/avg.py
+++ b/tests/system-test/2-query/avg.py
@@ -1,4 +1,3 @@
-from pyrsistent import v
 import taos
 import sys
 import datetime