diff --git a/kpi/filters.py b/kpi/filters.py
index 436c1beda0..711961550a 100644
--- a/kpi/filters.py
+++ b/kpi/filters.py
@@ -66,7 +66,7 @@ def filter_queryset(self, request, queryset, view):
             get_anonymous_user(), permission, queryset)
         if view.action != 'list':
             # Not a list, so discoverability doesn't matter
-            return owned_and_explicitly_shared | public
+            return (owned_and_explicitly_shared | public).distinct()
 
         # For a list, do not include public objects unless they are also
         # discoverable
@@ -85,7 +85,7 @@ def filter_queryset(self, request, queryset, view):
         if all_public:
             # We were asked not to consider subscriptions; return all
             # discoverable objects
-            return owned_and_explicitly_shared | discoverable
+            return (owned_and_explicitly_shared | discoverable).distinct()
 
         # Of the discoverable objects, determine to which the user has
         # subscribed
@@ -101,7 +101,7 @@ def filter_queryset(self, request, queryset, view):
                 # Neither the model or its parent has a subscription relation
                 subscribed = public.none()
 
-        return owned_and_explicitly_shared | subscribed
+        return (owned_and_explicitly_shared | subscribed).distinct()
 
 
 class RelatedAssetPermissionsFilter(KpiObjectPermissionsFilter):
diff --git a/kpi/models/asset.py b/kpi/models/asset.py
index 06fcbe5dc2..64a2e8c0ac 100644
--- a/kpi/models/asset.py
+++ b/kpi/models/asset.py
@@ -756,6 +756,7 @@ def has_active_hooks(self):
         :return: {boolean}
         """
         return self.hooks.filter(active=True).exists()
+
     @staticmethod
     def optimize_queryset_for_list(queryset):
         ''' Used by serializers to improve performance when listing assets '''