diff --git a/scripts/rt-outreachy-payment-next.plx b/scripts/rt-outreachy-payment-next.plx
index cb68473..454ad38 100755
--- a/scripts/rt-outreachy-payment-next.plx
+++ b/scripts/rt-outreachy-payment-next.plx
@@ -140,7 +140,7 @@ unless (defined $PAYMENT_DIR and -d $PAYMENT_DIR) {
   print STDERR "usage: $0 --paymentDir=<DIRECTORY>   option is required and directory must exist\n";
   exit 1;
 }
-unless (defined $PAYMENT_NUMBER and $PAYMENT_NUMBER =~ /^123$/) {
+unless (defined $PAYMENT_NUMBER and $PAYMENT_NUMBER =~ /^[123]$/) {
   print STDERR "usage: $0 --paymentNumber=<VALUE>  option is required and must be 1, 2 or 3\n";
   exit 1;
 }