1 files changed, 1 insertions, 3 deletions
diff --git a/tests/server.py b/tests/server.py
index ea9c22bc51..b97003fa5a 100644
--- a/tests/server.py
+++ b/tests/server.py
@@ -571,12 +571,10 @@ def connect_client(reactor: IReactorTCP, client_id: int) -> AccumulatingProtocol
         reactor
         factory: The connecting factory to build.
     """
-    factory = reactor.tcpClients[client_id][2]
+    factory = reactor.tcpClients.pop(client_id)[2]
     client = factory.buildProtocol(None)
     server = AccumulatingProtocol()
     server.makeConnection(FakeTransport(client, reactor))
     client.makeConnection(FakeTransport(server, reactor))
 
-    reactor.tcpClients.pop(client_id)
-
     return client, server