diff --git a/htdocs/core/lib/signature.lib.php b/htdocs/core/lib/signature.lib.php
index 1dbefb5719a..c59acbea209 100644
--- a/htdocs/core/lib/signature.lib.php
+++ b/htdocs/core/lib/signature.lib.php
@@ -59,7 +59,7 @@ function showOnlineSignatureUrl($type, $ref)
  */
 function getOnlineSignatureUrl($mode, $type, $ref = '', $localorexternal = 1)
 {
-	global $conf, $db, $langs, $dolibarr_main_url_root;
+	global $conf, $object, $dolibarr_main_url_root;
 
 	$ref = str_replace(' ', '', $ref);
 	$out = '';