diff --git a/backbone.js b/backbone.js
index 02eec7f5..571e78f6 100644
--- a/backbone.js
+++ b/backbone.js
@@ -507,7 +507,7 @@
     // Remove a model, or a list of models from the set. Pass silent to avoid
     // firing the `remove` event for every model removed.
     remove: function(models, options) {
-      var i, index, model;
+      var i, l, index, model;
       options || (options = {});
       models = _.isArray(models) ? models.slice() : [models];
       for (i = 0, l = models.length; i < l; i++) {