diff --git a/php/classes/BaseManager.php b/php/classes/BaseManager.php
index 89cacac..6a6201f 100755
--- a/php/classes/BaseManager.php
+++ b/php/classes/BaseManager.php
@@ -325,6 +325,7 @@ class BaseManager {
         $newVi = $this->baseDom->createElement("vi");
         $newId = $this->getNewId();
         $newVi->setAttribute('id', $newId);
+        if ($format == 'txt') $format = 'ascii';
         $newVi->setAttribute('format', strtoupper($format));
         $newVi->appendChild($this->baseDom->createElement("mask",$fileMask)); 
         $this->appendFiles($newVi, $fileMask);
--
libgit2 0.21.2