diff --git a/tests/extension/test_entrypoint.py b/tests/extension/test_entrypoint.py
index 7e0974c1c3..353194426d 100644
--- a/tests/extension/test_entrypoint.py
+++ b/tests/extension/test_entrypoint.py
@@ -6,9 +6,11 @@
 
 def test_server_extension_list(jp_environ, script_runner):
     ret = script_runner.run(
-        "jupyter",
-        "server",
-        "extension",
-        "list",
+        [
+            "jupyter",
+            "server",
+            "extension",
+            "list",
+        ]
     )
     assert ret.success