diff --git a/nacl/public.py b/nacl/public.py
index 36a590d8ca0935a26a087d07f566bac7d0bd4a57..6e4c08c48660d486a9d0541842355b2f31b9f339 100644
--- a/nacl/public.py
+++ b/nacl/public.py
@@ -77,7 +77,7 @@ class PrivateKey(encoding.Encodable, six.StringFixer, object):
 
         :rtype: :class:`~nacl.public.PrivateKey`
         """
-        return cls(random(nacl.lib.nacl.lib.crypto_box_SECRETKEYBYTES),
+        return cls(random(nacl.lib.crypto_box_SECRETKEYBYTES),
                     encoder=encoding.RawEncoder,
                 )