diff --git a/tests/unit/test_attach.py b/tests/unit/test_attach.py
index ea29a5566a..31c8693bb7 100644
--- a/tests/unit/test_attach.py
+++ b/tests/unit/test_attach.py
@@ -26,13 +26,15 @@ class TestAttachSubCommandOptions:
     @pytest.mark.parametrize(
         "option",
         [
-            "--native",
-            "--force",
-            "-f",
-            "--aggregate",
-            "--follow-fork",
-            "--trace-python-allocators",
-            "--no-compress",
+            ["--output", "foo"],
+            ["-o", "foo"],
+            ["--native"],
+            ["--force"],
+            ["-f"],
+            ["--aggregate"],
+            ["--follow-fork"],
+            ["--trace-python-allocators"],
+            ["--no-compress"],
         ],
     )
     def test_memray_attach_stop_tracking_option_with_other_options(
@@ -40,12 +42,11 @@ def test_memray_attach_stop_tracking_option_with_other_options(
     ):
         # WHEN
         with pytest.raises(SystemExit):
-            main(["attach", "1234", "--stop-tracking", option])
+            main(["attach", "1234", "--stop-tracking", *option])
 
         captured = capsys.readouterr()
-        assert (
-            "Can't use --stop-tracking with" in captured.err and option in captured.err
-        )
+        assert "Can't use --stop-tracking with" in captured.err
+        assert option[0] in captured.err.split()
 
     @pytest.mark.parametrize(
         "arg1,arg2",
@@ -69,17 +70,3 @@ def test_memray_attach_stop_tracking_option_with_other_mode_options(
             f"argument {arg2_name}: not allowed with argument {arg1_name}"
             in captured.err
         )
-
-    @pytest.mark.parametrize(
-        "option, argument",
-        [("--output", "test.bin")],
-    )
-    def test_memray_attach_stop_tracking_option_with_output_options(
-        self, option, argument, capsys
-    ):
-        # WHEN
-        with pytest.raises(SystemExit):
-            main(["attach", "1234", "--stop-tracking", option, argument])
-
-        captured = capsys.readouterr()
-        assert f"Can't use --stop-tracking with {option}" in captured.err