diff --git a/htdocs/core/modules/modStockTransfer.class.php b/htdocs/core/modules/modStockTransfer.class.php
index 86dc451cfac..597171709be 100644
--- a/htdocs/core/modules/modStockTransfer.class.php
+++ b/htdocs/core/modules/modStockTransfer.class.php
@@ -433,7 +433,7 @@ class modStockTransfer extends DolibarrModules
 	 */
 	public function init($options = '')
 	{
-		global $db, $conf, $langs;
+		global  $conf, $langs;
 
 		$result = $this->_load_tables('/stocktransfer/sql/');
 		if ($result < 0) return -1; // Do not activate module if error 'not allowed' returned when loading module SQL queries (the _load_table run sql with run_sql with the error allowed parameter set to 'default')
@@ -485,17 +485,17 @@ class modStockTransfer extends DolibarrModules
 		}
 
 		// Rôles
-		$resql = $db->query('SELECT rowid FROM '.MAIN_DB_PREFIX.'c_type_contact WHERE code = "STDEST" AND element = "StockTransfer" AND source = "internal"');
-		$res = $db->fetch_object($resql);
-		if (empty($res)) $db->query('INSERT INTO '.MAIN_DB_PREFIX.'c_type_contact(rowid, element, source, code, libelle, active, module, position) VALUES('.$this->getNextId().', "StockTransfer", "internal", "STRESP", "Responsable du transfert de stocks", 1, NULL, 0)');
+		$resql = $this->db->query('SELECT rowid FROM '.MAIN_DB_PREFIX.'c_type_contact WHERE code = "STDEST" AND element = "StockTransfer" AND source = "internal"');
+		$res = $this->db->fetch_object($resql);
+		if (empty($res)) $this->db->query('INSERT INTO '.MAIN_DB_PREFIX.'c_type_contact(rowid, element, source, code, libelle, active, module, position) VALUES('.$this->getNextId().', "StockTransfer", "internal", "STRESP", "Responsable du transfert de stocks", 1, NULL, 0)');
 
-		$resql = $db->query('SELECT rowid FROM '.MAIN_DB_PREFIX.'c_type_contact WHERE code = "STFROM" AND element = "StockTransfer" AND source = "external"');
-		$res = $db->fetch_object($resql);
-		if (empty($res)) $db->query('INSERT INTO '.MAIN_DB_PREFIX.'c_type_contact(rowid, element, source, code, libelle, active, module, position) VALUES('.$this->getNextId().', "StockTransfer", "external", "STFROM", "Contact expéditeur transfert de stocks", 1, NULL, 0)');
+		$resql = $this->db->query('SELECT rowid FROM '.MAIN_DB_PREFIX.'c_type_contact WHERE code = "STFROM" AND element = "StockTransfer" AND source = "external"');
+		$res = $this->db->fetch_object($resql);
+		if (empty($res)) $this->db->query('INSERT INTO '.MAIN_DB_PREFIX.'c_type_contact(rowid, element, source, code, libelle, active, module, position) VALUES('.$this->getNextId().', "StockTransfer", "external", "STFROM", "Contact expéditeur transfert de stocks", 1, NULL, 0)');
 
-		$resql = $db->query('SELECT rowid FROM '.MAIN_DB_PREFIX.'c_type_contact WHERE code = "STDEST" AND element = "StockTransfer" AND source = "external"');
-		$res = $db->fetch_object($resql);
-		if (empty($res)) $db->query('INSERT INTO '.MAIN_DB_PREFIX.'c_type_contact(rowid, element, source, code, libelle, active, module, position) VALUES('.$this->getNextId().', "StockTransfer", "external", "STDEST", "Contact destinataire transfert de stocks", 1, NULL, 0)');
+		$resql = $this->db->query('SELECT rowid FROM '.MAIN_DB_PREFIX.'c_type_contact WHERE code = "STDEST" AND element = "StockTransfer" AND source = "external"');
+		$res = $this->db->fetch_object($resql);
+		if (empty($res)) $this->db->query('INSERT INTO '.MAIN_DB_PREFIX.'c_type_contact(rowid, element, source, code, libelle, active, module, position) VALUES('.$this->getNextId().', "StockTransfer", "external", "STDEST", "Contact destinataire transfert de stocks", 1, NULL, 0)');
 
 		return $this->_init($sql, $options);
 	}
@@ -506,17 +506,15 @@ class modStockTransfer extends DolibarrModules
 	 */
 	public function getNextId()
 	{
-		global $db;
-
 		// Get free id for insert
 		$newid = 0;
 		$sql = "SELECT max(rowid) newid from ".MAIN_DB_PREFIX."c_type_contact";
-		$result = $db->query($sql);
+		$result = $this->db->query($sql);
 		if ($result) {
-			$obj = $db->fetch_object($result);
+			$obj = $this->db->fetch_object($result);
 			$newid = ($obj->newid + 1);
 		} else {
-			dol_print_error($db);
+			dol_print_error($this->db);
 			return -1;
 		}
 		return $newid;