diff --git a/lib/sync.js b/lib/sync.js
index b22f27ead..bdd7c0366 100644
--- a/lib/sync.js
+++ b/lib/sync.js
@@ -694,7 +694,7 @@ SyncApi.prototype._processSyncResponse = function(syncToken, data) {
  */
 SyncApi.prototype._startKeepAlives = function(delay) {
     if (delay === undefined) {
-        delay = 5000 + Math.floor(Math.random() * 5000)
+        delay = 5000 + Math.floor(Math.random() * 5000);
     }
 
     if (this._keepAliveTimer !== null) {