diff --git a/htdocs/bom/ajax/interface.php b/htdocs/bom/ajax/interface.php
index c93b54fdc33..1416f44f922 100644
--- a/htdocs/bom/ajax/interface.php
+++ b/htdocs/bom/ajax/interface.php
@@ -2,8 +2,8 @@
 require '../../main.inc.php';
 
 $action = GETPOST('action', 'alphanohtml');
-$select_product_val = GETPOST('select_product_val', 'alphanohtml');
-$current_bom_id = GETPOST('current_bom_id', 'alphanohtml');
+$select_product_val = GETPOST('select_product_val', 'int');
+$current_bom_id = GETPOST('current_bom_id', 'int');
 
 global $db;
 
@@ -12,7 +12,7 @@ switch ($action) {
 		//Selection of nomenclatures corresponding to the selected product
 		$sql = 'SELECT b.rowid, b.ref, b.label, b.fk_product, p.label AS product_label FROM '.MAIN_DB_PREFIX.'bom_bom AS b ';
 		$sql.= ' INNER JOIN '.MAIN_DB_PREFIX.'product AS p ON b.fk_product=p.rowid';
-		$sql.= ' WHERE fk_product='.$select_product_val.' AND b.rowid!='.$current_bom_id;
+		$sql.= ' WHERE fk_product='.(int)$select_product_val.' AND b.rowid<>'. (int)$current_bom_id;
 		$resql = $db->query($sql);
 		if ($resql && $db->num_rows($resql) > 0) {
 			$options = array();