diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 718c6372481..0107dd8641d 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -1918,6 +1918,7 @@ class Form
 	 *  @param  int     		$noactive       Show only active users (this will also happened whatever is this option if USER_HIDE_INACTIVE_IN_COMBOBOX is on).
 	 *  @param  int				$outputmode     0=HTML select string, 1=Array
 	 *  @param  bool			$multiple       add [] in the name of element and add 'multiple' attribut
+	 *  @param  int				$forcecombo     Force the component to be a simple combo box without ajax
 	 * 	@return	string							HTML select string
 	 *  @see select_dolgroups()
 	 */