diff --git a/tests/script/tsim/stream/windowClose.sim b/tests/script/tsim/stream/windowClose.sim
index a9c55bd9de..8e4e666dc9 100644
--- a/tests/script/tsim/stream/windowClose.sim
+++ b/tests/script/tsim/stream/windowClose.sim
@@ -48,15 +48,15 @@ sql create table t1 using st tags(1);
 sql create table t2 using st tags(2);
 
 sql create stream stream2 trigger window_close into streamt2 as select  _wstart, sum(a) from st interval(10s);
-sql create stream stream3 trigger max_delay 1s into streamt3 as select  _wstart, sum(a) from st interval(10s);
+sql create stream stream3 trigger max_delay 5s into streamt3 as select  _wstart, sum(a) from st interval(10s);
 sql create stream stream4 trigger window_close into streamt4 as select  _wstart, sum(a) from t1 interval(10s);
-sql create stream stream5 trigger max_delay 1s into streamt5 as select  _wstart, sum(a) from t1 interval(10s);
+sql create stream stream5 trigger max_delay 5s into streamt5 as select  _wstart, sum(a) from t1 interval(10s);
 sql create stream stream6 trigger window_close into streamt6 as select  _wstart, sum(a) from st session(ts, 10s);
-sql create stream stream7 trigger max_delay 1s into streamt7 as select  _wstart, sum(a) from st session(ts, 10s);
+sql create stream stream7 trigger max_delay 5s into streamt7 as select  _wstart, sum(a) from st session(ts, 10s);
 sql create stream stream8 trigger window_close into streamt8 as select  _wstart, sum(a) from t1 session(ts, 10s);
-sql create stream stream9 trigger max_delay 1s into streamt9 as select  _wstart, sum(a) from t1 session(ts, 10s);
+sql create stream stream9 trigger max_delay 5s into streamt9 as select  _wstart, sum(a) from t1 session(ts, 10s);
 sql create stream stream10 trigger window_close into streamt10 as select  _wstart, sum(a) from t1 state_window(b);
-sql create stream stream11 trigger max_delay 1s into streamt11 as select  _wstart, sum(a) from t1 state_window(b);
+sql create stream stream11 trigger max_delay 5s into streamt11 as select  _wstart, sum(a) from t1 state_window(b);
 
 run tsim/stream/checkTaskStatus.sim
 
diff --git a/tests/system-test/8-stream/max_delay_session.py b/tests/system-test/8-stream/max_delay_session.py
index 934fbbcac2..71827f03b4 100644
--- a/tests/system-test/8-stream/max_delay_session.py
+++ b/tests/system-test/8-stream/max_delay_session.py
@@ -92,7 +92,7 @@ class TDTestCase:
     def run(self):
         for fill_history_value in [None, 1]:
             for watermark in [None, random.randint(20, 30)]:
-                self.watermark_max_delay_session(session=random.randint(10, 15), watermark=watermark, max_delay=f"{random.randint(1, 3)}s", fill_history_value=fill_history_value)
+                self.watermark_max_delay_session(session=random.randint(10, 15), watermark=watermark, max_delay=f"{random.randint(5, 8)}s", fill_history_value=fill_history_value)
 
     def stop(self):
         tdSql.close()