diff --git a/test_reed.py b/test_reed.py
index 6b62872..ac025a4 100644
--- a/test_reed.py
+++ b/test_reed.py
@@ -459,9 +459,11 @@ def test_windows_powershell(self, monkeypatch):
         monkeypatch.setattr("reed.platform.system", lambda: "Windows")
         monkeypatch.setattr(
             "reed.shutil.which",
-            lambda cmd: r"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
-            if cmd == "powershell"
-            else None,
+            lambda cmd: (
+                r"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
+                if cmd == "powershell"
+                else None
+            ),
         )
         result = _default_play_cmd()
         assert result[0] == "powershell"