diff --git a/addons/website/static/src/snippets/s_table_of_content/options.js b/addons/website/static/src/snippets/s_table_of_content/options.js
index caa09ff3224..937366c59cf 100644
--- a/addons/website/static/src/snippets/s_table_of_content/options.js
+++ b/addons/website/static/src/snippets/s_table_of_content/options.js
@@ -20,6 +20,14 @@ options.registry.TableOfContent = options.Class.extend({
         this.observer.observe(targetNode, config);
         return this._super(...arguments);
     },
+    /**
+     * @override
+     */
+    destroy: function () {
+        // The observer needs to be disconnected first.
+        this.observer.disconnect();
+        this._super(...arguments);
+    },
     /**
      * @override
      */