diff --git a/test/test.js b/test/test.js
index 94670bbb3..2254a2474 100644
--- a/test/test.js
+++ b/test/test.js
@@ -7507,13 +7507,11 @@
         deepEqual(actual, [objects[1]]);
 
         set['delete'](2);
-        source = { 'a': set };
         actual = _.filter(objects, predicate);
 
         deepEqual(actual, objects);
 
         set.add(3);
-        source = { 'a': set };
         actual = _.filter(objects, predicate);
 
         deepEqual(actual, []);