--- a/storage/style.txt
+++ b/storage/style.txt
@@ -1,16 +1,19 @@
 Storage Module Style Guidelines
 
 These guidelines should be followed for all new code in this module.  Reviewers
 will be enforcing them, so please obey them!
 
-* All code should be contained within the namespace Mozilla::Storage at a
+* All code should be contained within the namespace mozilla::storage at a
   minimum.  The use of namespaces is strongly encouraged.
 
+* All functions being called in the global namespace should be prefixed with
+  "::" to indicate that they are in the global namespace.
+
 * The indentation level to use in source code is two spaces.  No tabs, please!
 
 * All files should have the following emacs and vim mode lines:
   -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   vim: sw=2 ts=2 sts=2 et :
 
 * All functions that are not XPCOM should start with a lowercase letter.