diff --git a/auth/auth.py b/auth/auth.py
index fc317067b..b67a42668 100644
--- a/auth/auth.py
+++ b/auth/auth.py
@@ -30,7 +30,7 @@ def validate_and_apply_oauth_token(token):
                            'error_description="The access token is invalid"'),
     }
     abort(401, message='OAuth access token could not be validated: %(token)s',
-          issue='invalid-oauth-token', token=token, header=authenticate_header)
+          issue='invalid-oauth-token', token=token, headers=authenticate_header)
   elif validated.expires_at <= datetime.now():
     logger.info('OAuth access with an expired token: %s', token)
     authenticate_header = {