Index: lib/uninstall.js
diff --git a/lib/uninstall.js b/lib/uninstall.js
index 0c2ad71c82b728239558c2bdae7ccc9a143d9923..cc83bac7589fc70bc0542d82da9b9ab6a05b4124 100644
--- a/lib/uninstall.js
+++ b/lib/uninstall.js
@@ -17,16 +17,17 @@
 
 /** @module uninstall */
 
-let info = require("info");
-let {Prefs} = require("prefs");
-let {Utils} = require("utils");
+"use strict";
+
+const info = require("info");
+const {Prefs} = require("prefs");
+const {Utils} = require("utils");
 
 function setUninstallURL()
 {
   let search = [];
-  let keys = ["addonName", "addonVersion", "application", "applicationVersion",
-              "platform", "platformVersion"];
-  for (let key of keys)
+  for (let key of ["addonName", "addonVersion", "application",
+                   "applicationVersion", "platform", "platformVersion"])
     search.push(key + "=" + encodeURIComponent(info[key]));
 
   let downlCount = Prefs.notificationdata.downloadCount || 0;