diff --git a/fastapi_oidc/auth.py b/fastapi_oidc/auth.py
index 999306b..dc0b28b 100644
--- a/fastapi_oidc/auth.py
+++ b/fastapi_oidc/auth.py
@@ -34,7 +34,7 @@ def test_auth(authenticated_user: AuthenticatedUser = Depends(authenticate_user)
 
 
 def get_auth(
-    *_,
+    *,
     client_id: str,
     audience: Optional[str] = None,
     base_authorization_server_uri: str,