diff --git a/htdocs/admin/syslog.php b/htdocs/admin/syslog.php
index 9280a8391e9..cd30af0dfdc 100644
--- a/htdocs/admin/syslog.php
+++ b/htdocs/admin/syslog.php
@@ -60,8 +60,8 @@ if (is_dir($dir))
 				$module = new $file;
 
 				// Show modules according to features level
-				if ($module->getVersion() == $module::DEVELOPMENT  && $conf->global->MAIN_FEATURES_LEVEL < 2) continue;
-				if ($module->getVersion() == $module::EXPERIMENTAL && $conf->global->MAIN_FEATURES_LEVEL < 1) continue;
+				if ($module->getVersion() == 'development' && $conf->global->MAIN_FEATURES_LEVEL < 2) continue;
+				if ($module->getVersion() == 'experimental' && $conf->global->MAIN_FEATURES_LEVEL < 1) continue;
 
 				$syslogModules[] = $file;
 			}
diff --git a/htdocs/core/modules/syslog/logHandler.php b/htdocs/core/modules/syslog/logHandler.php
index cc9a209d106..dbca7b306ac 100644
--- a/htdocs/core/modules/syslog/logHandler.php
+++ b/htdocs/core/modules/syslog/logHandler.php
@@ -7,10 +7,6 @@ require_once DOL_DOCUMENT_ROOT.'/core/modules/syslog/logHandlerInterface.php';
  */
 class LogHandler
 {
-	const STABLE = 'stable';
-	const DEVELOPMENT = 'development';
-	const EXPERIMENTAL = 'experimental';
-
 	/**
 	 * Content of the info tooltip.
 	 *
@@ -22,13 +18,13 @@ class LogHandler
 	}
 
 	/**
-	 * Version of the module
+	 * Version of the module ('x.y.z' or 'dolibarr' or 'experimental' or 'development')
 	 *
 	 * @return string
 	 */
 	public function getVersion()
 	{
-		return self::EXPERIMENTAL;
+		return 'development';
 	}
 
 	/**
diff --git a/htdocs/core/modules/syslog/mod_syslog_chromephp.php b/htdocs/core/modules/syslog/mod_syslog_chromephp.php
index ff07301207c..ffbdaba9e22 100644
--- a/htdocs/core/modules/syslog/mod_syslog_chromephp.php
+++ b/htdocs/core/modules/syslog/mod_syslog_chromephp.php
@@ -17,7 +17,7 @@ class mod_syslog_chromephp extends LogHandler implements LogHandlerInterface
 	 */
 	public function getVersion()
 	{
-		return self::STABLE;
+		return 'dolibarr';
 	}
 
 	/**
diff --git a/htdocs/core/modules/syslog/mod_syslog_file.php b/htdocs/core/modules/syslog/mod_syslog_file.php
index 08bc9360c7e..4fbc9a39c4d 100644
--- a/htdocs/core/modules/syslog/mod_syslog_file.php
+++ b/htdocs/core/modules/syslog/mod_syslog_file.php
@@ -19,7 +19,7 @@ class mod_syslog_file extends LogHandler implements LogHandlerInterface
 	 */
 	public function getVersion()
 	{
-		return self::STABLE;
+		return 'dolibarr';
 	}
 
 	/**
diff --git a/htdocs/core/modules/syslog/mod_syslog_firephp.php b/htdocs/core/modules/syslog/mod_syslog_firephp.php
index 2da1cf97804..fc9ee6491d7 100644
--- a/htdocs/core/modules/syslog/mod_syslog_firephp.php
+++ b/htdocs/core/modules/syslog/mod_syslog_firephp.php
@@ -17,7 +17,7 @@ class mod_syslog_firephp extends LogHandler implements LogHandlerInterface
 	 */
 	public function getVersion()
 	{
-		return self::STABLE;
+		return 'dolibarr';
 	}
 
 	/**
diff --git a/htdocs/core/modules/syslog/mod_syslog_syslog.php b/htdocs/core/modules/syslog/mod_syslog_syslog.php
index bd93d4f36ba..b708d8ac877 100644
--- a/htdocs/core/modules/syslog/mod_syslog_syslog.php
+++ b/htdocs/core/modules/syslog/mod_syslog_syslog.php
@@ -17,7 +17,7 @@ class mod_syslog_syslog extends LogHandler implements LogHandlerInterface
 	 */
 	public function getVersion()
 	{
-		return self::STABLE;
+		return 'dolibarr';
 	}
 
 	/**