diff --git a/modules/registration_views/includes/registration_handler_field_entity_capacity_used.inc b/modules/registration_views/includes/registration_handler_field_entity_capacity_used.inc
index 10aa362..d8657d7 100644
--- a/modules/registration_views/includes/registration_handler_field_entity_capacity_used.inc
+++ b/modules/registration_views/includes/registration_handler_field_entity_capacity_used.inc
@@ -3,10 +3,13 @@
  * @file
  * Display maximum slots for an entity.
  */
-class registration_handler_field_entity_capacity_used extends views_handler_field_entity {
+class registration_handler_field_entity_capacity_used extends views_handler_field_numeric {
   function render($values) {
-    $entity = $this->get_value($values);
-    list($entity_id) = entity_extract_ids($this->entity_type, $entity);
-    return (int) registration_event_count($this->entity_type, $entity_id);
+    $entity_id = $this->get_value($values);
+    $table = $this->table;
+    $alias = $this->field_alias;
+    $slots_used = (int) registration_event_count($table, $entity_id);
+    $values->$alias = $slots_used;
+    return parent::render($values);
   }
 }