diff --git a/backend/stream.py b/backend/stream.py
index d79dde6..351a167 100755
--- a/backend/stream.py
+++ b/backend/stream.py
@@ -102,7 +102,7 @@ class UpstreamHandler():
         self.upstream = None
     async def test_socks(self, proxy):
         if not isinstance(proxy, str):
-            return True
+            return (True, ProxyElem(None))
         try:
             splitted = proxy.rsplit(":", 1)
             host = proxy