diff --git a/adm/tabs/AdminInvoices.php b/adm/tabs/AdminInvoices.php
index 8a33345c..f1ce63d7 100755
--- a/adm/tabs/AdminInvoices.php
+++ b/adm/tabs/AdminInvoices.php
@@ -113,7 +113,7 @@ class AdminInvoices extends AdminTab
 					<th align="center">'. $this->l('Delay') .'</th>
 				</tr>';
 			 //	<th align="center">M2\'</th>
-			$id_sales = unserialize(Configuration::get("ANT_CHECKED_SALE_".$cookie->id_employee));
+			$id_sales = unserialize(Configuration::get("ANT_CHECKED_SALES"));
 			foreach ($this->print_sales as $key => $sale) {
 				if( $key%2 == 0) {
 					$class = 'alt_row';
@@ -354,8 +354,7 @@ class AdminInvoices extends AdminTab
 
 	public function ajaxProcessResetPrintM2Plus()
 	{
-		global $cookie;
-		Configuration::updateValue("ANT_CHECKED_SALE_".$cookie->id_employee, '');
+		Configuration::updateValue("ANT_CHECKED_SALES", '');
 	}
 
 	public function display()
@@ -366,7 +365,7 @@ class AdminInvoices extends AdminTab
 
 	public function postProcess()
 	{
-		global $currentIndex, $cookie;
+		global $currentIndex;
 
 		if (Tools::isSubmit('submitPrint'))
 		{
@@ -501,7 +500,7 @@ class AdminInvoices extends AdminTab
 			include_once(dirname(__FILE__).'/../../modules/privatesales/Sale.php');
 			$id_sales =  Tools::getValue('multi2');
 
-			Configuration::updateValue("ANT_CHECKED_SALE_".$cookie->id_employee, serialize($id_sales));
+			Configuration::updateValue("ANT_CHECKED_SALES", serialize($id_sales));
 
 			if (empty($id_sales) ||	(count($id_sales) < 2) ) {
 				$this->_errors[] = $this->l('You must select 2 sales minimum for print M2+');