diff --git a/packages/mongo-livedata/mongo_driver.js b/packages/mongo-livedata/mongo_driver.js
index bceb13178e..c2c9f88cf1 100644
--- a/packages/mongo-livedata/mongo_driver.js
+++ b/packages/mongo-livedata/mongo_driver.js
@@ -345,7 +345,7 @@ _Mongo.Cursor.prototype.count = function () {
     future.ret([err, res]);
   });
 
-  var err = future.wait();
+  var result = future.wait();
   if (result[0])
     throw result[0];
   return result[1];