diff --git a/facetapi.callbacks.inc b/facetapi.callbacks.inc
index 86996ef..2ae18cf 100644
--- a/facetapi.callbacks.inc
+++ b/facetapi.callbacks.inc
@@ -19,7 +19,10 @@
  */
 function facetapi_map_bundle(array $values, array $options) {
   if (empty($options['entities'])) {
-    $options['entities'] = array('node');
+    $options['entities'] = array(
+      'node',
+      'user',
+    );
   }
   foreach ($options['entities'] as $entity_type) {
     if ($info = entity_get_info($entity_type)) {