diff --git a/app/views/graders/submission.html.haml b/app/views/graders/submission.html.haml
--- a/app/views/graders/submission.html.haml
+++ b/app/views/graders/submission.html.haml
@@ -18,5 +18,5 @@
 %div{:style => "border: 1px solid black; background: lightgrey"}
   - if @submission.source
     %pre
-      =h truncate(@submission.source,10240)
+      =h truncate @submission.source, :length => 10240