diff --git a/htdocs/fichinter/class/fichinter.class.php b/htdocs/fichinter/class/fichinter.class.php
index b590bbfdc20..c838b7033cf 100644
--- a/htdocs/fichinter/class/fichinter.class.php
+++ b/htdocs/fichinter/class/fichinter.class.php
@@ -1361,7 +1361,7 @@ class Fichinter extends CommonObject
 	 *  @param		array	$array_options			Array option
 	 *	@return    	int             				>0 if ok, <0 if ko
 	 */
-	public function addline($user, $fichinterid, $desc, $date_intervention, $duration, $array_options = '')
+	public function addline($user, $fichinterid, $desc, $date_intervention, $duration, $array_options = [])
 	{
 		dol_syslog(get_class($this)."::addline $fichinterid, $desc, $date_intervention, $duration");