diff --git a/MANIFEST.SKIP b/MANIFEST.SKIP
index 2def20f..2ddea05 100644
--- a/MANIFEST.SKIP
+++ b/MANIFEST.SKIP
@@ -8,3 +8,6 @@ MANIFEST.SKIP
 RT-Extension-SMSNotify-.*
 \..*\.swp
 README.md
+Makefile
+MYMETA.json
+MYMETA.yml
\ No newline at end of file
diff --git a/lib/RT/Extension/SMSNotify.pm b/lib/RT/Extension/SMSNotify.pm
index d56039c..3b2716e 100644
--- a/lib/RT/Extension/SMSNotify.pm
+++ b/lib/RT/Extension/SMSNotify.pm
@@ -101,9 +101,14 @@ C<SMS::Send::RedSMS>.
 
 =head2 $SMSNotifyGetPhoneForUserFn
 
-This config-overridable method is useful for filtering users to limit the
-recipients of a message.  For example, you might want to return a user's phone
-number only when their local time is between 08:00 and 17:00.
+By default, notifications will use the Pager number defined on the RT
+user record of recipients. This behavior can be overriden to support
+additional logic.
+
+Setting a custom method via C<$SMSNotifyGetPhoneForUserFn> is useful for
+filtering users to limit the recipients of a message.  For example, you
+might want to return a user's phone number only when their local time
+is between 08:00 and 17:00.
 
 If set, this variable must be either a function reference or a string that names
 a module with a function named GetPhoneForUser. In either case the variable is set
diff --git a/lib/RT/Extension/SMSNotify/OnShift.pm b/lib/RT/Extension/SMSNotify/OnShift.pm
index 35abdb3..c21438b 100644
--- a/lib/RT/Extension/SMSNotify/OnShift.pm
+++ b/lib/RT/Extension/SMSNotify/OnShift.pm
@@ -89,7 +89,7 @@ See the configuration section and L<RT::Extension::SMSNotify>.
 sub GetPhoneForUser {
     # Cache the custom field on first use to avoid repeat lookups
     if (!defined($cf)) {
-        $cf = RT::CustomField->new( RT::SystemUser );
+        $cf = RT::CustomField->new( RT->SystemUser );
         $cf->Load('ShiftCode');
     }