diff --git a/admin/aqbudgetperiods.pl b/admin/aqbudgetperiods.pl
index 39f3cd00b1..724c7e53bb 100755
--- a/admin/aqbudgetperiods.pl
+++ b/admin/aqbudgetperiods.pl
@@ -120,6 +120,7 @@ if ( $op eq 'add_form' ) {
         my $editnum = new Number::Format(
             'int_curr_symbol'   => '',
             'thousands_sep'     => '',
+            'mon_thousands_sep' => '',
             'mon_decimal_point' => '.'
         );