diff --git a/app/assets/stylesheets/desktop/topic-post.scss b/app/assets/stylesheets/desktop/topic-post.scss
index 44741759c62..f4d5ae17d9f 100644
--- a/app/assets/stylesheets/desktop/topic-post.scss
+++ b/app/assets/stylesheets/desktop/topic-post.scss
@@ -11,7 +11,11 @@
   }
 
   @include medium-width {
-    width: 800px;
+    width: 795px;
+  }
+
+  @include small-width {
+    width: 815px;
   }
 }