diff --git a/background.js b/background.js
index 04e644af10..e76d7daf8a 100644
--- a/background.js
+++ b/background.js
@@ -198,6 +198,12 @@ function getUserID(callback) {
       userID = userIDStorage;
       callback(userID);
     } else {
+      //double check if a UUID hasn't been created since this was first called
+      if (userID != null) {
+        callback(userID);
+        return;
+      }
+
       //generate a userID
       userID = generateUUID();
       
diff --git a/firefox_manifest.json b/firefox_manifest.json
index 121823094e..8b8f939eab 100644
--- a/firefox_manifest.json
+++ b/firefox_manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "SponsorBlock - YouTube Sponsorship Blocker",
   "short_name": "SponsorBlock",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "description": "Skip over sponsorship on YouTube videos. Report sponsors on videos you watch to save the time of others.",
   "content_scripts": [
     {
diff --git a/manifest.json b/manifest.json
index 7df9077395..b365cedd80 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "SponsorBlock - YouTube Sponsorship Blocker",
   "short_name": "SponsorBlock",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "description": "Skip over sponsorship on YouTube videos. Report sponsors on videos you watch to save the time of others.",
   "content_scripts": [
     {