diff --git a/ur_robot_driver/test/test_common.py b/ur_robot_driver/test/test_common.py
index 5b6033ce..435a20c3 100644
--- a/ur_robot_driver/test/test_common.py
+++ b/ur_robot_driver/test/test_common.py
@@ -273,8 +273,7 @@ def _ursim_action():
                     "start_ursim.sh",
                 ]
             ),
-            " ",
-            "-m ",
+            "-m",
             ur_type,
         ],
         name="start_ursim",