diff --git a/tests/test_operator.py b/tests/test_operator.py
index ab5f661a8d..4993b249b2 100644
--- a/tests/test_operator.py
+++ b/tests/test_operator.py
@@ -785,7 +785,7 @@ def test_connect_get_output_double_list_operator(server_type):
 @conftest.raises_for_servers_version_under("5.0")
 def test_connect_get_output_string_list_operator(server_clayer):
     d = ["hello", "bye"]
-    op = dpf.core.operators.utility.forward(d, server=server_clayer)
+    dpf.core.operators.utility.forward(d, server=server_clayer)
 
 
 def test_connect_result(plate_msup, server_type):