diff --git a/htdocs/bookcal/calendar_card.php b/htdocs/bookcal/calendar_card.php
index b343c86192f..0a8bfaa7fdf 100644
--- a/htdocs/bookcal/calendar_card.php
+++ b/htdocs/bookcal/calendar_card.php
@@ -477,7 +477,7 @@ if ($object->id > 0 && (empty($action) || ($action != 'edit' && $action != 'crea
 
 			// Clone
 			if ($permissiontoadd) {
-				print dolGetButtonAction('', $langs->trans('ToClone'), 'default', $_SERVER['PHP_SELF'].'?id='.$object->id.(!empty($object->socid) ? '&socid='.$object->socid : '').'&action=clone&token='.newToken(), '', $permissiontoadd);
+				print dolGetButtonAction('', $langs->trans('ToClone'), 'default', $_SERVER['PHP_SELF'].'?id='.$object->id.'&action=clone&token='.newToken(), '', $permissiontoadd);
 			}
 
 			/*