diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index cfe5c9fb75d..7fe2fb39c2a 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -151,7 +151,9 @@ if (! defined('SYSLOG_FILE'))	// To avoid warning on systems with constant alrea
 	if (@is_writable('/tmp')) define('SYSLOG_FILE','/tmp/dolibarr_install.log');
 	else if (! empty($_ENV["TMP"])  && @is_writable($_ENV["TMP"]))  define('SYSLOG_FILE',$_ENV["TMP"].'/dolibarr_install.log');
 	else if (! empty($_ENV["TEMP"]) && @is_writable($_ENV["TEMP"])) define('SYSLOG_FILE',$_ENV["TEMP"].'/dolibarr_install.log');
-	else if (@is_writable("/")) define('SYSLOG_FILE','/dolibarr_install.log');
+	else if (@is_writable('../../../../')) define('SYSLOG_FILE','../../../../dolibarr_install.log');	// For DoliWamp
+	else if (@is_writable('../../')) define('SYSLOG_FILE','../../dolibarr_install.log');				// For others
+	//print 'SYSLOG_FILE='.SYSLOG_FILE;exit;
 }
 if (! defined('SYSLOG_FILE_NO_ERROR'))
 {
@@ -233,7 +235,9 @@ function conf($dolibarr_main_document_root)
 		if (@is_writable('/tmp')) define('SYSLOG_FILE','/tmp/dolibarr_install.log');
 		else if (! empty($_ENV["TMP"])  && @is_writable($_ENV["TMP"]))  define('SYSLOG_FILE',$_ENV["TMP"].'/dolibarr_install.log');
 		else if (! empty($_ENV["TEMP"]) && @is_writable($_ENV["TEMP"])) define('SYSLOG_FILE',$_ENV["TEMP"].'/dolibarr_install.log');
-		else if (@is_writable("/")) define('SYSLOG_FILE','/dolibarr_install.log');
+		else if (@is_writable('../../../../')) define('SYSLOG_FILE','../../../../dolibarr_install.log');	// For DoliWamp
+		else if (@is_writable('../../')) define('SYSLOG_FILE','../../dolibarr_install.log');				// For others
+		//print 'SYSLOG_FILE='.SYSLOG_FILE;exit;
 	}
 	if (! defined('SYSLOG_FILE_NO_ERROR'))
 	{