diff --git a/c2cwsgiutils/auth.py b/c2cwsgiutils/auth.py
index 60aadeccb..2f67ff1d5 100644
--- a/c2cwsgiutils/auth.py
+++ b/c2cwsgiutils/auth.py
@@ -93,7 +93,9 @@ def _is_auth_secret(request: pyramid.request.Request) -> bool:
         if secret_hash != _hash_secret(expected):
             return False
         # login or refresh the cookie
-        request.response.set_cookie(SECRET_ENV, secret_hash, max_age=_COOKIE_AGE, httponly=True, secure=True, SameSite="Strict")
+        request.response.set_cookie(
+            SECRET_ENV, secret_hash, max_age=_COOKIE_AGE, httponly=True, secure=True, SameSite="Strict"
+        )
         # since this could be used from outside c2cwsgiutils views, we cannot set the path to c2c
         return True
     return False