1 files changed, 3 insertions, 3 deletions
diff --git a/services/sync/tests/unit/test_history_tracker.js b/services/sync/tests/unit/test_history_tracker.js
index 5ed022fb0..ca1090b79 100644
--- a/services/sync/tests/unit/test_history_tracker.js
+++ b/services/sync/tests/unit/test_history_tracker.js
@@ -22,13 +22,13 @@ function onScoreUpdated(callback) {
 
 Service.engineManager.clear();
 Service.engineManager.register(HistoryEngine);
-var engine = Service.engineManager.get("history");
-var tracker = engine._tracker;
+let engine = Service.engineManager.get("history");
+let tracker = engine._tracker;
 
 // Don't write out by default.
 tracker.persistChangedIDs = false;
 
-var _counter = 0;
+let _counter = 0;
 function addVisit() {
   let uriString = "http://getfirefox.com/" + _counter++;
   let uri = Utils.makeURI(uriString);