diff --git a/framework/core/js/src/admin/components/AdminNav.js b/framework/core/js/src/admin/components/AdminNav.js
index 8ee4b9699..0c307e7b3 100644
--- a/framework/core/js/src/admin/components/AdminNav.js
+++ b/framework/core/js/src/admin/components/AdminNav.js
@@ -126,16 +126,17 @@ export default class AdminNav extends Component {
 
       categorizedExtensions[category].map((extension) => {
         const query = this.query().toUpperCase();
-        const title = extension.extra['flarum-extension'].title;
+        const title = extension.extra['flarum-extension'].title || '';
+        const description = extension.description || '';
 
-        if (!query || title.toUpperCase().includes(query) || extension.description.toUpperCase().includes(query)) {
+        if (!query || title.toUpperCase().includes(query) || description.toUpperCase().includes(query)) {
           items.add(
             `extension-${extension.id}`,
             <ExtensionLinkButton
               href={app.route('extension', { id: extension.id })}
               extensionId={extension.id}
               className="ExtensionNavButton"
-              title={extension.description}
+              title={description}
             >
               {title}
             </ExtensionLinkButton>,