diff --git a/htdocs/admin/syslog.php b/htdocs/admin/syslog.php
index b0699f99aa5..941f1728c03 100644
--- a/htdocs/admin/syslog.php
+++ b/htdocs/admin/syslog.php
@@ -37,7 +37,7 @@ $action = GETPOST("action");
 $syslogModules = array();
 $activeModules = array();
 
-if (defined('SYSLOG_HANDLERS')) $activeModules = json_decode(SYSLOG_HANDLERS);
+if (defined('SYSLOG_HANDLERS')) $activeModules = json_decode(constant('SYSLOG_HANDLERS'));
 
 $dir = dol_buildpath('/core/modules/syslog/');
 
diff --git a/htdocs/core/class/conf.class.php b/htdocs/core/class/conf.class.php
index 9cf96f14aeb..9d44addfe81 100644
--- a/htdocs/core/class/conf.class.php
+++ b/htdocs/core/class/conf.class.php
@@ -152,7 +152,7 @@ class Conf
 				$value=$objp->value;
 				if ($key)
 				{
-					if (! defined("$key")) define("$key", $value);	// In some cases, the constant might be already forced (Example: SYSLOG_FILE_ON and SYSLOG_FILE during install)
+					if (! defined("$key")) define("$key", $value);	// In some cases, the constant might be already forced (Example: SYSLOG_HANDLERS during install)
 					$this->global->$key=$value;
 
 					if ($value && preg_match('/^MAIN_MODULE_/',$key))
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index f216bfb359b..04802d3d28f 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -473,8 +473,8 @@ function dol_strtoupper($utf8_string)
 
 /**
  *	Write log message into outputs. Possible outputs can be:
- *	A file if SYSLOG_FILE_ON defined:   	file name is then defined by SYSLOG_FILE
- *	Syslog if SYSLOG_SYSLOG_ON defined:    	facility is then defined by SYSLOG_FACILITY
+ *	SYSLOG_HANDLERS = ["mod_syslog_file"]  		file name is then defined by SYSLOG_FILE
+ *	SYSLOG_HANDLERS = ["mod_syslog_syslog"]  	facility is then defined by SYSLOG_FACILITY
  *  Warning, syslog functions are bugged on Windows, generating memory protection faults. To solve
  *  this, use logging to files instead of syslog (see setup of module).
  *  Note: If SYSLOG_FILE_NO_ERROR defined, we never output any error message when writing to log fails.
diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index 04d4ac6de93..4e913e7810b 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -303,7 +303,7 @@ function conf($dolibarr_main_document_root)
     // Force usage of log file for install and upgrades
     $conf->syslog->enabled=1;
     $conf->global->SYSLOG_LEVEL=constant('LOG_DEBUG');
-    if (! defined('SYSLOG_FILE_ON')) define('SYSLOG_FILE_ON',1);
+    if (! defined('SYSLOG_HANDLERS')) define('SYSLOG_HANDLERS','["mod_syslog_file"]');
     if (! defined('SYSLOG_FILE'))	// To avoid warning on systems with constant already defined
     {
         if (@is_writable('/tmp')) define('SYSLOG_FILE','/tmp/dolibarr_install.log');
diff --git a/htdocs/install/mysql/data/llx_const.sql b/htdocs/install/mysql/data/llx_const.sql
index 973152f119c..d9fdc2ba8da 100644
--- a/htdocs/install/mysql/data/llx_const.sql
+++ b/htdocs/install/mysql/data/llx_const.sql
@@ -35,7 +35,7 @@ insert into llx_const (name, value, type, note, visible, entity) values ('MAIN_N
 insert into llx_const (name, value, type, note, visible, entity) values ('MAIN_FEATURES_LEVEL','0','chaine','Level of features to show (0=stable only, 1=stable+experimental, 2=stable+experimental+development',1,0);
 
 -- Hidden and common to all entities
-insert into llx_const (name, value, type, note, visible, entity) values ('SYSLOG_FILE_ON','1','chaine','Log to file Directory where to write log file',0,0);
+insert into llx_const (name, value, type, note, visible, entity) values ('SYSLOG_HANDLERS','["mod_syslog_file"]','chaine','Which logger to use',0,0);
 insert into llx_const (name, value, type, note, visible, entity) values ('SYSLOG_FILE','DOL_DATA_ROOT/dolibarr.log','chaine','Directory where to write log file',0,0);
 insert into llx_const (name, value, type, note, visible, entity) values ('SYSLOG_LEVEL','7','chaine','Level of debug info to show',0,0);