diff --git a/chrome/m4redirect.js b/chrome/m4redirect.js
index 155f954..edffd83 100644
--- a/chrome/m4redirect.js
+++ b/chrome/m4redirect.js
@@ -5,7 +5,7 @@ var chrome;
 // If someone knows a better way to detect Mastodon4 instances, please send me a message!
 // raikas@techspace.social
 const MASTODON_DIV = document.getElementById("mastodon");
-const EXTERNAL_USER_REGEX = /^(@[a-zA-Z0-9_]+)(?!.*@)(?!\/.+)$/; // @username matches, @username@test.social @username/following doesn't
+const EXTERNAL_USER_REGEX = /^\/(@[a-zA-Z0-9_]+)(?!.*@)(?!\/.+)$/; // @username matches, @username@test.social @username/following doesn't
 const EXTERNAL_POST_REGEX = /(@[a-zA-Z0-9_]+)(?!.*@)\/(\d+)/; // @username matches, @username@test.social doesn't
 
 if (MASTODON_DIV) {
diff --git a/chrome/manifest.json b/chrome/manifest.json
index 8e99be1..54f687f 100644
--- a/chrome/manifest.json
+++ b/chrome/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 3,
   "name": "Mastodon4 Redirect",
-  "version": "1.3",
+  "version": "1.4",
   "description": "Redirects users from Mastodon4 supported instances to their home instance",
   "icons": {
     "16": "icon-16.png",
diff --git a/manifest.json b/manifest.json
index d4f5328..3bd39c8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Mastodon4 Redirect",
-  "version": "1.3",
+  "version": "1.4",
   "description": "Redirects users from Mastodon4 supported instances to their home instance",
   "icons": {
     "48": "icon.svg",
diff --git a/src/m4redirect.js b/src/m4redirect.js
index 155f954..edffd83 100644
--- a/src/m4redirect.js
+++ b/src/m4redirect.js
@@ -5,7 +5,7 @@ var chrome;
 // If someone knows a better way to detect Mastodon4 instances, please send me a message!
 // raikas@techspace.social
 const MASTODON_DIV = document.getElementById("mastodon");
-const EXTERNAL_USER_REGEX = /^(@[a-zA-Z0-9_]+)(?!.*@)(?!\/.+)$/; // @username matches, @username@test.social @username/following doesn't
+const EXTERNAL_USER_REGEX = /^\/(@[a-zA-Z0-9_]+)(?!.*@)(?!\/.+)$/; // @username matches, @username@test.social @username/following doesn't
 const EXTERNAL_POST_REGEX = /(@[a-zA-Z0-9_]+)(?!.*@)\/(\d+)/; // @username matches, @username@test.social doesn't
 
 if (MASTODON_DIV) {