diff --git a/app/assets/javascripts/discourse/app/components/tag-info.js b/app/assets/javascripts/discourse/app/components/tag-info.js
index 587d7bc7daa..c625e69ef97 100644
--- a/app/assets/javascripts/discourse/app/components/tag-info.js
+++ b/app/assets/javascripts/discourse/app/components/tag-info.js
@@ -131,7 +131,7 @@ export default Component.extend({
   @action
   finishedEditing() {
     const oldTagName = this.tag.id;
-    this.newTagDescription = this.newTagDescription.replaceAll("\n", "<br>");
+    this.newTagDescription = this.newTagDescription?.replaceAll("\n", "<br>");
     this.tag
       .update({ id: this.newTagName, description: this.newTagDescription })
       .then((result) => {