diff --git a/core/main.js b/core/main.js
index cb39bf72..bac428ee 100644
--- a/core/main.js
+++ b/core/main.js
@@ -33,8 +33,8 @@ main._initializeSettings = function () {
 
     storageManager.type.get(null, function (items) {
         // Delete old keys
-        if (typeof items.whitelistedDomains !== 'undefined') {
-            if (typeof items.allowlistedDomains === 'undefined' || Object.keys(items.allowlistedDomains).length === 0) {
+        if (items.whitelistedDomains !== undefined) {
+            if (items.allowlistedDomains === undefined || Object.keys(items.allowlistedDomains).length === 0) {
                 items['allowlistedDomains'] = items.whitelistedDomains;
             }
             delete items['whitelistedDomains'];
@@ -42,7 +42,7 @@ main._initializeSettings = function () {
         }
 
         // Convert value of notifications
-        if (typeof items.hideReleaseNotes !== 'undefined') {
+        if (items.hideReleaseNotes !== undefined) {
             if (items.hideReleaseNotes === true) {
                 items.updateNotification = 0;
             } else {
diff --git a/core/storage-manager.js b/core/storage-manager.js
index 4e5e20fe..46639b76 100644
--- a/core/storage-manager.js
+++ b/core/storage-manager.js
@@ -137,13 +137,13 @@ storageManager._validation = function (content) {
     let imported = {};
 
     // Delete old keys
-    if (typeof content.whitelistedDomains !== 'undefined') {
+    if (content.whitelistedDomains !== undefined) {
         content.allowlistedDomains = content.whitelistedDomains;
         delete content['whitelistedDomains'];
     }
 
     // Convert value of notifications
-    if (typeof content.hideReleaseNotes !== 'undefined') {
+    if (content.hideReleaseNotes !== undefined) {
         content.updateNotification = content.hideReleaseNotes ? 0 : 2;
         delete content['hideReleaseNotes'];
     }