diff --git a/equipment/tables.py b/equipment/tables.py
index a14d907..6daa83e 100644
--- a/equipment/tables.py
+++ b/equipment/tables.py
@@ -51,7 +51,8 @@ class EquipmentFilter(django_filters.FilterSet):
         if self.queryset is not None:
             for filter_ in self.filters.values():
                 if filter_.queryset.model == Group:
-                    own_ids = [eq.owner.id for eq in self.queryset]
+                    own_ids = [eq.owner.id for eq in self.queryset
+                               if eq.owner is not None]
                     filtre = Q(id__lt=0)
                     for own_id in own_ids:
                         filtre |= Q(id=own_id)