diff --git a/htdocs/admin/export.php b/htdocs/admin/export.php
index d9c2c508464..d066197b580 100644
--- a/htdocs/admin/export.php
+++ b/htdocs/admin/export.php
@@ -90,7 +90,7 @@ print '<tr class="oddeven">';
 print '<td>'.$langs->trans("EXPORTS_SHARE_MODELS").'</td>';
 print '<td class="center" width="20">&nbsp;</td>';
 print '<td class="center" width="100">';
-echo ajax_constantonoff('EXPORTS_SHARE_MODELS');
+print ajax_constantonoff('EXPORTS_SHARE_MODELS');
 print '</td></tr>';
 
 print '<tr class="oddeven">';
diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index 9de5ceba476..d27bab84162 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -516,7 +516,8 @@ function hideMessage(fieldId,message) {
 
 
 /*
- * Used by button to set on/off
+ * Used by button to set on/off.
+ * Call url then make complementary action (like show/hide, enable/disable or set another option).
  *
  * @param	string	url			Url
  * @param	string	code		Code
@@ -525,12 +526,14 @@ function hideMessage(fieldId,message) {
  * @param	int		strict		Strict
  * @param   int     forcereload Force reload
  * @param   int     userid      User id
+ * @param   string  token       Token
  */
-function setConstant(url, code, input, entity, strict, forcereload, userid) {
+function setConstant(url, code, input, entity, strict, forcereload, userid, token) {
 	$.get( url, {
 		action: "set",
 		name: code,
-		entity: entity
+		entity: entity,
+		token: token
 	},
 	function() {
 		console.log("url request success forcereload="+forcereload);
@@ -587,6 +590,7 @@ function setConstant(url, code, input, entity, strict, forcereload, userid) {
 
 /*
  * Used by button to set on/off
+ * Call url then make complementary action (like show/hide, enable/disable or set another option).
  *
  * @param	string	url			Url
  * @param	string	code		Code
@@ -595,12 +599,14 @@ function setConstant(url, code, input, entity, strict, forcereload, userid) {
  * @param	int		strict		Strict
  * @param   int     forcereload Force reload
  * @param   int     userid      User id
+ * @param   string  token       Token
  */
-function delConstant(url, code, input, entity, strict, forcereload, userid) {
+function delConstant(url, code, input, entity, strict, forcereload, userid, token) {
 	$.get( url, {
 		action: "del",
 		name: code,
-		entity: entity
+		entity: entity,
+		token: token
 	},
 	function() {
 		console.log("url request success forcereload="+forcereload);
diff --git a/htdocs/core/lib/ajax.lib.php b/htdocs/core/lib/ajax.lib.php
index 6f730c03976..62fc5bccb27 100644
--- a/htdocs/core/lib/ajax.lib.php
+++ b/htdocs/core/lib/ajax.lib.php
@@ -491,8 +491,8 @@ function ajax_combobox($htmlname, $events = array(), $minLengthToAutocomplete =
  *  @param	int		$revertonoff			Revert on/off
  *  @param	int		$strict					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	string	$marginleftonlyshort	1 = Add a short left margin on picto, 2 = Add a larger left margin on picto, 0 = No margin left. Works for fontawesome picto only.
- *  @param	int		$forcenoajax	1=Force to use a ahref link instead of ajax code.
+ *  @param	string	$marginleftonlyshort	1 = Add a short left margin on picto, 2 = Add a larger left margin on picto, 0 = No left margin. Works for fontawesome picto only.
+ *  @param	int		$forcenoajax			1=Force to use a ahref link instead of ajax code.
  * 	@return	string
  */
 function ajax_constantonoff($code, $input = array(), $entity = null, $revertonoff = 0, $strict = 0, $forcereload = 0, $marginleftonlyshort = 2, $forcenoajax = 0)