diff --git a/pages/popup/popup.js b/pages/popup/popup.js
index e14e11a6..4e1dcab5 100644
--- a/pages/popup/popup.js
+++ b/pages/popup/popup.js
@@ -388,6 +388,9 @@ popup._createInjectionElement = function (injection) {
         let versionNode = '';
 
         if (injection.versionRequested === injection.versionDelivered) {
+        if (injection.versionRequested === undefined || injection.versionDelivered === undefined) {
+            versionNode = '';
+        } else if (injection.versionRequested === injection.versionDelivered) {
             versionNode = ` v${injection.versionRequested}`;
         } else if (injection.versionRequested === 'beta') {
             versionNode = ` ${injection.versionRequested}`;
diff --git a/pages/updates/updates.html b/pages/updates/updates.html
index 9ffd4102..cdd013ad 100644
--- a/pages/updates/updates.html
+++ b/pages/updates/updates.html
@@ -32,6 +32,7 @@
                             <li>Added: jScrollPane v2.2.2 (<a href="https://codeberg.org/nobody/LocalCDN/issues/73">#73</a>)</li>
                             <li>Added: Tooltipster v3.3.0 (<a href="https://codeberg.org/nobody/LocalCDN/issues/73">#73</a>)</li>
                             <li>Added: Materialize (JS & CSS) v0.97.8</li>
+                            <li>Fixed: Undefined version number in the popup</li>
                         </ul>
                     <div id="generator-section">
                         <div class="topic-label">