diff --git a/htdocs/core/js/lib_head.js.php b/htdocs/core/js/lib_head.js.php
index f03be3711f9..f40f84c7b2c 100644
--- a/htdocs/core/js/lib_head.js.php
+++ b/htdocs/core/js/lib_head.js.php
@@ -520,9 +520,9 @@ function hideMessage(fieldId,message) {
  * 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	url			Url (warning: as any url called in ajax mode, the url called here must not renew the token)
  * @param	string	code		Code
- * @param	string	intput		Input
+ * @param	string	intput		Array of complementary actions to do if success
  * @param	int		entity		Entity
  * @param	int		strict		Strict
  * @param   int     forcereload Force reload
@@ -574,11 +574,12 @@ function setConstant(url, code, input, entity, strict, forcereload, userid, toke
 				$.each(data, function(key, value) {
 					$("#set_" + key).hide();
 					$("#del_" + key).show();
-					$.get( url, {
+					$.post( url, {
 						action: "set",
 						name: key,
 						value: value,
-						entity: entity
+						entity: entity,
+						token: token
 					});
 				});
 			}
@@ -593,9 +594,9 @@ function setConstant(url, code, input, entity, strict, forcereload, userid, toke
  * 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	url			Url (warning: as any url called in ajax mode, the url called here must not renew the token)
  * @param	string	code		Code
- * @param	string	intput		Input
+ * @param	string	intput		Array of complementary actions to do if success
  * @param	int		entity		Entity
  * @param	int		strict		Strict
  * @param   int     forcereload Force reload
@@ -644,10 +645,11 @@ function delConstant(url, code, input, entity, strict, forcereload, userid, toke
 				$.each(data, function(key, value) {
 					$("#del_" + value).hide();
 					$("#set_" + value).show();
-					$.get( url, {
+					$.post( url, {
 						action: "del",
 						name: value,
-						entity: entity
+						entity: entity,
+						token: token
 					});
 				});
 			}