diff --git a/static/js/skiplist.js b/static/js/skiplist.js
index 385f08f0d..190bc55b9 100644
--- a/static/js/skiplist.js
+++ b/static/js/skiplist.js
@@ -21,7 +21,7 @@
  */
 
 
-
+var noop = require('./ace2_common').noop;
 
 
 function newSkipList()
@@ -41,9 +41,6 @@ function newSkipList()
     };
   }
 
-  function noop()
-  {}
-
   // if there are N elements in the skiplist, "start" is element -1 and "end" is element N
   var start = {
     key: null,