diff --git a/app/assets/stylesheets/comments.scss b/app/assets/stylesheets/comments.scss
index 4d7cc866b..fcb528199 100644
--- a/app/assets/stylesheets/comments.scss
+++ b/app/assets/stylesheets/comments.scss
@@ -663,6 +663,7 @@ a.header-link {
       padding-top: 6%;
       padding-bottom: 6%;
       overflow-wrap: normal;
+      overflow-x: auto;
       code {
         background: #29292e;
         color: #eff0f9;