diff --git a/app/views/test/index.html.erb b/app/views/test/index.html.erb
--- a/app/views/test/index.html.erb
+++ b/app/views/test/index.html.erb
@@ -62,7 +62,7 @@
     <th>#</th>
     <th>status</th>
     <th>running stat</th>
-    <th>output</th>
+    <th>output (first 2kb)</th>
     <th>grading comment</th>
     <th>compiler message</th>
   </tr>