diff --git a/nixos/tests/xmpp/xmpp-sendmessage.nix b/nixos/tests/xmpp/xmpp-sendmessage.nix
index 3503963e3cee..21f471261cc6 100644
--- a/nixos/tests/xmpp/xmpp-sendmessage.nix
+++ b/nixos/tests/xmpp/xmpp-sendmessage.nix
@@ -98,7 +98,7 @@ writeScriptBin "send-message" ''
       # MUC
       ct.register_plugin('xep_0045')
       ct.connect(("${connectTo}", 5222))
-      ct.process(forever=False)
+      ct.loop.run_until_complete(ct.disconnected)
 
       if not ct.test_succeeded:
           sys.exit(1)