diff --git a/tests/test_web_websocket_functional.py b/tests/test_web_websocket_functional.py
index 0c3bcdd54a5..94280cf45f1 100644
--- a/tests/test_web_websocket_functional.py
+++ b/tests/test_web_websocket_functional.py
@@ -280,7 +280,7 @@ async def handler(request):
     await asyncio.sleep(0.08)
     assert (await aborted)
 
-    assert elapsed < 0.201, \
+    assert elapsed < 0.25, \
         'close() should have returned before ' \
         'at most 2x timeout.'