Index: docs/DeveloperPolicy.rst
===================================================================
--- docs/DeveloperPolicy.rst
+++ docs/DeveloperPolicy.rst
@@ -314,7 +314,9 @@
   code snippets and gory details should be left to bug comments, web
   review or the mailing list.
 
-* If the patch fixes a bug in bugzilla, please include the PR# in the message.
+* If the patch fixes a bug in bugzilla, please include a reference to
+  http://llvm.org/PR# in the message. Use a full URL rather than just the
+  PR number.
 
 * `Attribution of Changes`_ should be in a separate line, after the end of
   the body, as simple as "Patch by John Doe.". This is how we officially
@@ -326,8 +328,8 @@
 
 * If the commit is a bug fix on top of another recently committed patch, or a
   revert or reapply of a patch, include the svn revision number of the prior
-  related commit. This could be as simple as "Revert rNNNN because it caused
-  PR#".
+  related commit in the message. This could be as simple as "Revert rNNNN
+  because it caused http://llvm.org/PR#".
 
 For minor violations of these recommendations, the community normally favors
 reminding the contributor of this policy over reverting. Minor corrections and