diff --git a/tests/test_rpc_server.py b/tests/test_rpc_server.py
index 5e5bb86ed..b49e53cf1 100644
--- a/tests/test_rpc_server.py
+++ b/tests/test_rpc_server.py
@@ -36,6 +36,8 @@ class ServerSetupMixin(object):
                                                     serializer=serializer)
 
         def stop(self, ctxt):
+            # Check start() does nothing with a running server
+            self._server.start()
             self._server.stop()
             self._server.wait()