diff --git a/ui/xcode.css b/ui/xcode.css
index cbe5fd75b..54b3e637a 100644
--- a/ui/xcode.css
+++ b/ui/xcode.css
@@ -5,6 +5,7 @@ XCode style (c) Angel Garcia <angelgarcia.mail@gmail.com>
 */
 
 .hljs {
+  white-space: pre-wrap;
   display: block;
   overflow-x: auto;
   padding: 0.5em;