diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index 56f7b893f3..957a283522 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -312,6 +312,10 @@ code {
 
     ul {
       columns: 2;
+
+      @media screen and (max-width: $mobile-breakpoint) {
+        columns: 1;
+      }
     }
   }