diff --git a/tests/ert/unit_tests/ensemble_evaluator/test_monitor.py b/tests/ert/unit_tests/ensemble_evaluator/test_monitor.py
index 4fc083fbba0..0f46f47734a 100644
--- a/tests/ert/unit_tests/ensemble_evaluator/test_monitor.py
+++ b/tests/ert/unit_tests/ensemble_evaluator/test_monitor.py
@@ -108,7 +108,6 @@ async def mock_event_handler(router_socket):
         await router_socket.send_multipart([dealer, b"", ACK_MSG])
         dealer = dealer.decode("utf-8")
         assert dealer.startswith("client-")
-        frame = frame.decode("utf-8")
         assert frame == CONNECT_MSG
         router_socket.close()