1 files changed, 4 insertions, 3 deletions
diff --git a/rt/etc/upgrade/4.0-customfield-checkbox-extension.in b/rt/etc/upgrade/4.0-customfield-checkbox-extension.in
index 8cc0ec7be..b3d466e73 100644
--- a/rt/etc/upgrade/4.0-customfield-checkbox-extension.in
+++ b/rt/etc/upgrade/4.0-customfield-checkbox-extension.in
@@ -46,15 +46,16 @@
 # those contributions and any derivatives thereof.
 #
 # END BPS TAGGED BLOCK }}}
+use 5.10.1;
 use strict;
 use warnings;
 
 use lib "@LOCAL_LIB_PATH@";
 use lib "@RT_LIB_PATH@";
 
-use RT;
-RT::LoadConfig();
-RT::Init();
+use RT -init;
+
+$| = 1;
 
 use RT::CustomFields;
 my $cfs = RT::CustomFields->new( RT->SystemUser );