diff --git a/aider/run_cmd.py b/aider/run_cmd.py
index 10aa572cb..5434b4a7a 100644
--- a/aider/run_cmd.py
+++ b/aider/run_cmd.py
@@ -31,7 +31,9 @@ def run_cmd_subprocess(command, verbose=False):
             # Use PowerShell if it's the parent process
             if "powershell" in os.environ.get("PSModulePath", "").lower():
                 shell = "powershell"
-                command = f'powershell -ExecutionPolicy Bypass -Command "& {{({command}) | Out-String}}"'
+                command = (
+                    f'powershell -ExecutionPolicy Bypass -Command "& {{({command}) | Out-String}}"'
+                )
             else:
                 shell = "cmd"
         else: