diff --git a/ironic/common/exception.py b/ironic/common/exception.py
index 8cbc15b8ca..aac4795b22 100644
--- a/ironic/common/exception.py
+++ b/ironic/common/exception.py
@@ -92,7 +92,6 @@ class IronicException(Exception):
     """
     _msg_fmt = _("An unknown exception occurred.")
     code = http_client.INTERNAL_SERVER_ERROR
-    headers = {}
     safe = False
 
     def __init__(self, message=None, **kwargs):