diff --git a/htdocs/core/modules/supplier_order/doc/pdf_cornas.modules.php b/htdocs/core/modules/supplier_order/doc/pdf_cornas.modules.php
index 22bc80e161d..275b4672109 100644
--- a/htdocs/core/modules/supplier_order/doc/pdf_cornas.modules.php
+++ b/htdocs/core/modules/supplier_order/doc/pdf_cornas.modules.php
@@ -56,6 +56,11 @@ class pdf_cornas extends ModelePDFSuppliersOrders
 	 */
 	public $description;
 
+	/**
+     * @var int 	Save the name of generated file as the main doc when generating a doc with this template
+     */
+    public $update_main_doc_field;
+
 	/**
 	 * @var string document type
 	 */
@@ -130,6 +135,7 @@ class pdf_cornas extends ModelePDFSuppliersOrders
 		$this->db = $db;
 		$this->name = "cornas";
 		$this->description = $langs->trans('SuppliersCommandModel');
+		$this->update_main_doc_field = 1;		// Save the name of generated file as the main doc when generating a doc with this template
 
 		// Page size for A4 format
 		$this->type = 'pdf';