diff --git a/htdocs/core/class/html.formfile.class.php b/htdocs/core/class/html.formfile.class.php
index 649f3f512e6..4349a4bfc82 100644
--- a/htdocs/core/class/html.formfile.class.php
+++ b/htdocs/core/class/html.formfile.class.php
@@ -160,7 +160,7 @@ class FormFile
 	 *	@param	int			$sectionid		If upload must be done inside a particular ECM section (is sectionid defined, sectiondir must not be)
 	 * 	@param	int			$perm			Value of permission to allow upload
 	 *  @param  int			$size          	Length of input file area. Deprecated.
-	 *  @param	?CommonObject|BlockedLog	$object		Object to use (when attachment is done on an element)
+	 *  @param	CommonObject|BlockedLog|null	$object		Object to use (when attachment is done on an element)
 	 *  @param	string		$options		Add an option column
 	 *  @param  int<0,1>    $useajax        Use fileupload ajax (0=never, 1=if enabled, 2=always whatever is option).
 	 *                                      Deprecated 2 should never be used and if 1 is used, option should not be enabled.