diff --git a/js/media.filter.js b/js/media.filter.js
index 2e4ceda..c1b39c9 100644
--- a/js/media.filter.js
+++ b/js/media.filter.js
@@ -182,7 +182,7 @@
         file_info.attributes = {};
 
         // Extract whitelisted attributes.
-        $.each(Drupal.media.filter.allowed_attributes, function(i, a) {
+        $.each(Drupal.media.filter.allowed_attributes(), function(i, a) {
           if (value = element.attr(a)) {
             file_info.attributes[a] = value;
           }