diff --git a/aresponses/main.py b/aresponses/main.py
index <HASH>..<HASH> 100644
--- a/aresponses/main.py
+++ b/aresponses/main.py
@@ -179,7 +179,7 @@ class ResponsesMockServer(BaseTestServer):
             return route, response
 
         self._unmatched_requests.append(request)
-        return route, None
+        return None, None
 
     async def passthrough(self, request):
         """Make non-mocked network request"""
fix: don't return undefined variable