diff --git a/static/css/highlight/lines.css b/static/css/highlight/lines.css
index b476e2a..68c7a56 100644
--- a/static/css/highlight/lines.css
+++ b/static/css/highlight/lines.css
@@ -18,6 +18,7 @@
     text-align: right;
     padding-right: 5px;
     color: #999;
+    overflow-wrap: normal;
 
     -webkit-touch-callout: none;
     -webkit-user-select: none;