diff --git a/evennia/typeclasses/attributes.py b/evennia/typeclasses/attributes.py
index 61ee533513..bc51c2a95b 100644
--- a/evennia/typeclasses/attributes.py
+++ b/evennia/typeclasses/attributes.py
@@ -269,7 +269,7 @@ class AttributeHandler(object):
             # for this category before
             catkey = "-%s" % category
             if _TYPECLASS_AGGRESSIVE_CACHE and catkey in self._catcache:
-                return [attr for key, attr in self._cache if key.endswith(catkey)]
+                return [attr for key, attr in self._cache.items() if key.endswith(catkey)]
             else:
                 # we have to query to make this category up-date in the cache
                 query = {"%s__id" % self._model : self._objid,