diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 39d9b270b2b..8db4aade4c2 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -5084,7 +5084,7 @@ class Form
      *  @param	CommonObject	$object		Object we want to show links to
      *  @return	int							<0 if KO, >0 if OK
      */
-    function showLinkedObjectBlock(CommonObject $object)
+    function showLinkedObjectBlock($object)
     {
         global $conf,$langs,$hookmanager;
         global $bc;