diff --git a/libs/Maniaplanet/DedicatedServer/Connection.php b/libs/Maniaplanet/DedicatedServer/Connection.php
index f88d942a..e7962782 100755
--- a/libs/Maniaplanet/DedicatedServer/Connection.php
+++ b/libs/Maniaplanet/DedicatedServer/Connection.php
@@ -4250,9 +4250,9 @@ class Connection
 		if(is_string($filename))
 		{
 			$filename = $this->stripBom($filename);
-			if(mb_check_encoding($filename, 'ascii'))
-				return $filename;
-			return "\xEF\xBB\xBF".$filename;
+			if(preg_match('/[^\x09\x0A\x0D\x20-\x7E]/', $filename))
+				return "\xEF\xBB\xBF".$filename;
+			return $filename;
 		}
 		return array_map(array($this, 'secureUtf8'), $filename);
 	}
diff --git a/libs/Maniaplanet/DedicatedServer/Xmlrpc/FaultException.php b/libs/Maniaplanet/DedicatedServer/Xmlrpc/FaultException.php
index c3e37d7b..bb317e9b 100755
--- a/libs/Maniaplanet/DedicatedServer/Xmlrpc/FaultException.php
+++ b/libs/Maniaplanet/DedicatedServer/Xmlrpc/FaultException.php
@@ -34,6 +34,7 @@ class FaultException extends Exception
 				return new LockedFeatureException($faultString, $faultCode);
 			case 'Login or Uid unknown.':
 			case 'Login unknown.':
+			case 'Payer login unknown.':
 				return new UnknownPlayerException($faultString, $faultCode);
 			case 'The player is not a spectator':
 			case 'The player is not a spectator.':