diff --git a/framework/core/ember/app/styles/flarum/discussion.less b/framework/core/ember/app/styles/flarum/discussion.less
index e45717f5f..bc1ab145a 100644
--- a/framework/core/ember/app/styles/flarum/discussion.less
+++ b/framework/core/ember/app/styles/flarum/discussion.less
@@ -278,7 +278,7 @@
   }
 }
 
-@media @tablet @desktop @desktop-hd {
+@media @tablet, @desktop, @desktop-hd {
   .post {
     padding-left: 90px;