diff --git a/background.js b/background.js
index ad48312..1c272fb 100644
--- a/background.js
+++ b/background.js
@@ -1,7 +1,7 @@
 browser.idle.onStateChanged.addListener((state) => {
     if (state == 'idle') {
         browser.storage.local.get('days').then((res) => {
-            var days = res.days || 0;
+            var days = parseInt(res.days) || 0;
             if (days !== 0) {
                 var end = new Date();
                 end.setHours(0);
diff --git a/manifest.json b/manifest.json
index d3bd938..2bb6728 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
     "manifest_version": 2,
     "name": "History Cleaner",
-    "version": "1.2",
+    "version": "1.2.1",
     "description": "Deletes history older than a specified amount of days.",
     "applications": {
         "gecko": {