diff --git a/framework/core/js/forum/src/components/discussion-page.js b/framework/core/js/forum/src/components/discussion-page.js
index 8ba62ccda..27c516ae6 100644
--- a/framework/core/js/forum/src/components/discussion-page.js
+++ b/framework/core/js/forum/src/components/discussion-page.js
@@ -82,6 +82,7 @@ export default class DiscussionPage extends mixin(Component, evented) {
         includedPosts.push(app.store.getById('posts', record.id));
       }
     });
+    includedPosts.sort((a, b) => a.id() - b.id());
 
     this.stream = new PostStream({ discussion, includedPosts });
     this.stream.on('positionChanged', this.positionChanged.bind(this));