-if ( $cust_main->referral_custnum ) {
- my $referring_cust_main =
- qsearchs('cust_main', { custnum => $cust_main->referral_custnum } );
+my $referring_cust_main = '';
+if ( $cust_main->referral_custnum
+ and $referring_cust_main =
+ qsearchs('cust_main', { custnum => $cust_main->referral_custnum } )
+) {