diff --git a/extensions/mentions/js/src/mentioned-by-list.js b/extensions/mentions/js/src/mentioned-by-list.js
index d7666335b..22f23c40d 100644
--- a/extensions/mentions/js/src/mentioned-by-list.js
+++ b/extensions/mentions/js/src/mentioned-by-list.js
@@ -15,9 +15,16 @@ export default function mentionedByList() {
   });
 
   extend(CommentPost.prototype, 'footerItems', function(items) {
-    var replies = this.props.post.mentionedBy();
+    var post = this.props.post;
+    var replies = post.mentionedBy();
     if (replies && replies.length) {
 
+      // If there is only one reply, and it's adjacent to this post, we don't
+      // really need to show the list.
+      if (replies.length === 1 && replies[0].number() == post.number() + 1) {
+        return;
+      }
+
       var hidePreview = () => {
         this.$('.mentioned-by-preview').removeClass('in').one('transitionend', function() { $(this).hide(); });
       };