diff --git a/framework/core/js/src/forum/components/PostStream.js b/framework/core/js/src/forum/components/PostStream.js
index 9d192d7d6..e3ef7f262 100644
--- a/framework/core/js/src/forum/components/PostStream.js
+++ b/framework/core/js/src/forum/components/PostStream.js
@@ -84,11 +84,13 @@ export default class PostStream extends Component {
         </div>
       );
 
-      if (post && post.id() === this.discussion.data.relationships.firstPost?.data.id && this.afterFirstPostItems().toArray().length > 0) {
+      const afterPostItems = post && post.id() === this.discussion.data.relationships.firstPost?.data.id ? this.afterFirstPostItems().toArray() : [];
+
+      if (afterPostItems.length > 0) {
         return m.fragment({ ...attrs }, [
           postStreamElement,
           <div className="PostStream-item PostStream-afterFirstPost" key="afterFirstPost">
-            {this.afterFirstPostItems().toArray()}
+            {afterPostItems}
           </div>,
         ]);
       }