diff --git a/grader b/grader
--- a/grader
+++ b/grader
@@ -207,7 +207,7 @@
     puts "user: #{u.login}"
     last_sub = Submission.find(:first,
                                :conditions => "user_id = #{u.id} and " +
-                               "problem_id = #{prob.id}",
+                                              "problem_id = #{prob.id}",
                                :order => 'submitted_at DESC')
     if last_sub!=nil
       grade(last_sub.id)