diff --git a/app/assets/stylesheets/common/base/onebox.scss b/app/assets/stylesheets/common/base/onebox.scss
index f49d2923aad..61687ebabe3 100644
--- a/app/assets/stylesheets/common/base/onebox.scss
+++ b/app/assets/stylesheets/common/base/onebox.scss
@@ -461,6 +461,7 @@ pre.onebox code {
 
   .github-content {
     margin: 5px 0 0 0;
+    word-break: break-word;
   }
 
   .labels span {