Don't prematurely claim the magic number.
diff --git a/README.rst b/README.rst
index 6695f9e..0e3849e 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,6 @@
-=====================
-PEP 500: Type hinting
-=====================
+======================
+PEP NNNN: Type hinting
+======================
This is a work-in-progress repository for the draft of the Type Hinting
PEP for Python 3.5.
diff --git a/pep-0500.txt b/pep-NNNN.txt
similarity index 99%
rename from pep-0500.txt
rename to pep-NNNN.txt
index 43130ca..791a9f3 100644
--- a/pep-0500.txt
+++ b/pep-NNNN.txt
@@ -1,4 +1,4 @@
-PEP: 500
+PEP: NNN
Title: Type Hints
Version: $Revision$
Last-Modified: $Date$
