$sql = "SELECT c.*, t.name as tax_name FROM ".TB_PREF."stock_category c, "
.TB_PREF."item_tax_types t WHERE c.dflt_tax_type=t.id";
-if (!check_value('show_inactive')) $sql .= " AND !inactive";
+if (!check_value('show_inactive')) $sql .= " AND !c.inactive";
$result = db_query($sql, "could not get stock categories");