diff --git a/app/assets/stylesheets/application/topic-post.css.scss b/app/assets/stylesheets/application/topic-post.css.scss
index c972a2b829..a091422063 100644
--- a/app/assets/stylesheets/application/topic-post.css.scss
+++ b/app/assets/stylesheets/application/topic-post.css.scss
@@ -322,7 +322,7 @@
       padding: 0 10px 0 0;
       h3 {
         margin: 3px 0 0;
-        font-size: 14px;
+        font-size: 13px;
         line-height: 18px;
       }