diff --git a/src/app/components/shared/comment-list/comment-list.component.ts b/src/app/components/shared/comment-list/comment-list.component.ts
index 96ba333323c06c461709a1805f051810eada05e7..f3cc9319966c7c9d9f4074882a678bde6f26076e 100644
--- a/src/app/components/shared/comment-list/comment-list.component.ts
+++ b/src/app/components/shared/comment-list/comment-list.component.ts
@@ -73,7 +73,7 @@ export class CommentListComponent implements OnInit {
 
   getCommentsCreator(): Comment[] {
     let commentThreshold = -10;
-    if (this.room.extensions) {
+    if (this.room.extensions && this.room.extensions['comments']) {
       commentThreshold = this.room.extensions['comments'].commentThreshold;
       if (this.hideCommentsList) {
         return this.filteredComments.filter( x => x.score >= commentThreshold );