diff --git a/core/themes/bartik/css/components/comments.css b/core/themes/bartik/css/components/comments.css
index 30e1be8..03bbfd1 100644
--- a/core/themes/bartik/css/components/comments.css
+++ b/core/themes/bartik/css/components/comments.css
@@ -61,6 +61,7 @@
   border: 1px solid #d3d7d9;
   font-size: 0.929em;
   line-height: 1.6;
+  word-break: break-all;
 }
 
 .comment__content:before {