diff --git a/client/less/challenge.less b/client/less/challenge.less
index 5ccb4ca610..bda7787603 100644
--- a/client/less/challenge.less
+++ b/client/less/challenge.less
@@ -63,6 +63,7 @@
   font-family: "Ubuntu Mono";
   margin-top: 8px;
   line-height:20px;
+  word-wrap: break-word;
 }
 
 .grayed-out-test-output {