diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index f50649ba55b..58ebb2923b5 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -563,7 +563,7 @@ function hideMessage(fieldId,message) {
  * @param	string	code		Code
  * @param	string	input		Array of complementary actions to do if success
  * @param	int		entity		Entity
- * @param	int		strict		Strict
+ * @param	int		strict		Strict (0=?, 1=?)
  * @param   int     forcereload Force reload
  * @param   int     userid      User id
  * @param	int		value       Value to set
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index 6579e8cbbb5..f21101cd1ae 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -628,7 +628,7 @@ function ajax_event($htmlname, $events)
  * 	@param  array       $input                  Array of complementary actions to do if success ("disabled"|"enabled'|'set'|'del') => CSS element to switch, 'alert' => message to show, ... Example: array('disabled'=>array(0=>'cssid'))
  * 	@param  int|null    $entity                 Entity. Current entity is used if null.
  *  @param  int         $revertonoff            1=Revert on/off
- *  @param  int	        $strict                 Use only "disabled" with delConstant and "enabled" with setConstant
+ *  @param  int	        $strict                 0=Default, 1=Only the complementary actions "disabled and "enabled" (found into $input) are processed. Use only "disabled" with delConstant and "enabled" with setConstant.
  *  @param  int         $forcereload            Force to reload page if we click/change value (this is supported only when there is no 'alert' option in input)
  *  @param  int         $marginleftonlyshort    1 = Add a short left margin on picto, 2 = Add a larger left margin on picto, 0 = No left margin.
  *  @param  int	        $forcenoajax            1 = Force to use a ahref link instead of ajax code.
diff --git a/htdocs/langs/en_US/eventorganization.lang b/htdocs/langs/en_US/eventorganization.lang
index 88b83d6d1bb..f0ea1354e72 100644
--- a/htdocs/langs/en_US/eventorganization.lang
+++ b/htdocs/langs/en_US/eventorganization.lang
@@ -114,6 +114,7 @@ EventType = Event type
 LabelOfBooth=Booth label
 LabelOfconference=Conference label
 ConferenceIsNotConfirmed=Registration not available, conference is not confirmed yet
+EventRegistrationAreClosed=Event registration are closed
 DateMustBeBeforeThan=%s must be before %s
 DateMustBeAfterThan=%s must be after %s
 MaxNbOfAttendeesReached=The maximum number of participants has been reached