diff --git a/htdocs/core/lib/signature.lib.php b/htdocs/core/lib/signature.lib.php
index d819c760c35..38f11f0da1f 100644
--- a/htdocs/core/lib/signature.lib.php
+++ b/htdocs/core/lib/signature.lib.php
@@ -66,9 +66,9 @@ function getOnlineSignatureUrl($mode, $type, $ref = '', $localorexternal = 1, $o
 	if (empty($obj)) {
 		// For compatibility with 15.0 -> 19.0
 		global $object;
-        if (empty($object)) {
-            $obj = new stdClass();
-        } else {
+		if (empty($object)) {
+			$obj = new stdClass();
+		} else {
 			dol_syslog(__METHOD__." using global object is deprecated, please give obj as argument", LOG_WARNING);
 			$obj = $object;
 		}