diff --git a/htdocs/core/modules/facture/mod_facture_mars.php b/htdocs/core/modules/facture/mod_facture_mars.php
index 852d499e66e..21dc49c32f3 100644
--- a/htdocs/core/modules/facture/mod_facture_mars.php
+++ b/htdocs/core/modules/facture/mod_facture_mars.php
@@ -67,7 +67,7 @@ class mod_facture_mars extends ModeleNumRefFactures
 	 */
 	function canBeActivated()
 	{
-		global $langs,$conf;
+		global $langs,$conf,$db;
 
 		$langs->load("bills");