diff --git a/fivestar.module b/fivestar.module
index 1b9db2c..21fe97f 100644
--- a/fivestar.module
+++ b/fivestar.module
@@ -771,6 +771,22 @@ function fivestar_fivestar_target_info($field, $instance) {
     }
   }
 
+  // Add entityreference support.
+  if (module_exists('entityreference')) {
+    $field_names = array_keys(field_read_fields(array('module' => 'entityreference')));
+    if (!empty($field_names)) {
+      $field_instances = field_read_instances(array('entity_type' => $entity_type, 'bundle' => $bundle, 'field_name' => $field_names));
+      if (!empty($field_instances)) {
+        foreach ($field_instances as $field_instance) {
+          $options[$field_instance['field_name']] = array(
+            'title' => t('Entity reference: @field', array('@field' => $field_instance['field_name'])),
+            'callback' => '_fivestar_target_entityreference'
+          );
+        }
+      }
+    }
+  }
+
   // Add comment module support.
   if ($instance['entity_type'] == 'comment') {
     $options['parent_node'] = array(
@@ -798,6 +814,25 @@ function _fivestar_target_node_reference($entity, $field, $instance, $langcode)
   return $target;
 }
 
+/**
+ * @return (array) array('entity_type', 'entity_id')
+ */
+function _fivestar_target_entityreference($entity, $field, $instance, $langcode) {
+  $target = array();
+
+  $entityreference = $instance['settings']['target'];
+
+  // Retrieve entity settings for the referenced field.
+  $field_info = field_info_field($entityreference);
+
+  if (isset($entity->{$entityreference}[$langcode][0]) && isset($entity->{$entityreference}[$langcode][0]['target_id']) && is_numeric($entity->{$entityreference}[$langcode][0]['target_id'])) {
+    $target['entity_id'] = $entity->{$entityreference}[$langcode][0]['target_id'];
+    $target['entity_type'] = $field_info['settings']['target_type'];
+  }
+
+  return $target;
+}
+
 function _fivestar_target_comment_parent_node($entity, $field, $instance, $langcode) {
   return array(
     'entity_id' => $entity->nid,