diff --git a/src/js/profiler.js b/src/js/profiler.js
index 5861ac725..e7947565c 100644
--- a/src/js/profiler.js
+++ b/src/js/profiler.js
@@ -22,7 +22,7 @@
 /******************************************************************************/
 
 var quickProfiler = (function() {
-    var timer = typeof performance === "undefined" ? Date : performance;
+    var timer = window.performance || Date;
     var time = 0;
     var count = 0;
     var tstart = 0;
diff --git a/src/js/vapi-background.js b/src/js/vapi-background.js
index 1db13ae25..110ff4534 100644
--- a/src/js/vapi-background.js
+++ b/src/js/vapi-background.js
@@ -271,7 +271,7 @@ if (window.chrome) {
 
     vAPI.storage = {
         _storage: safari.extension.settings,
-        QUOTA_BYTES: 50 * 1024 * 1024,
+        QUOTA_BYTES: 52428800, // copied from Info.plist
         get: function(keys, callback) {
             if (typeof callback !== 'function') {
                 return;