diff --git a/js/src/forum/states/PostStreamState.js b/js/src/forum/states/PostStreamState.js
index 14d1bab8e..8fb4e396d 100644
--- a/js/src/forum/states/PostStreamState.js
+++ b/js/src/forum/states/PostStreamState.js
@@ -125,7 +125,6 @@ class PostStreamState {
   show(posts) {
     this.visibleStart = posts.length ? this.discussion.postIds().indexOf(posts[0].id()) : 0;
     this.visibleEnd = this.sanitizeIndex(this.visibleStart + posts.length);
-    this.index = (this.visibleEnd + this.visibleStart) / 2;
     this.description = posts.length ? dayjs(posts[Math.floor(posts.length / 2)].createdAt()).format('MMMM YYYY') : '';
   }