diff --git a/slixmpp_omemo/__init__.py b/slixmpp_omemo/__init__.py
index c42820f..dff48b6 100644
--- a/slixmpp_omemo/__init__.py
+++ b/slixmpp_omemo/__init__.py
@@ -252,7 +252,7 @@ class XEP_0384(BasePlugin):
             return None
         bundle = iq['pubsub']['items']['item']['bundle']
 
-        return _parse_bundle(self._omemo, bundle)
+        return _parse_bundle(self.omemo_backend, bundle)
 
     async def _fetch_device_list(self, jid: JID) -> None:
         """Manually query PEP OMEMO_DEVICES_NS nodes"""