diff --git a/premium-rsa/grader.py b/premium-rsa/grader.py
index b47a8f9..104db56 100644
--- a/premium-rsa/grader.py
+++ b/premium-rsa/grader.py
@@ -1,5 +1,5 @@
 from cStringIO import StringIO
-import os, random
+import os
 from Crypto.Util import number