diff --git a/app/assets/stylesheets/desktop/topic-post.scss b/app/assets/stylesheets/desktop/topic-post.scss
index c4b4a16c9..f9d497913 100644
--- a/app/assets/stylesheets/desktop/topic-post.scss
+++ b/app/assets/stylesheets/desktop/topic-post.scss
@@ -619,6 +619,7 @@ h3 {
   margin-top: 5px;
   color: #aaa;
   overflow: hidden;
+  font-size: 80%;
 }