diff --git a/src/text-mp4.js b/src/text-mp4.js
index aaf6caf4..a124cb81 100644
--- a/src/text-mp4.js
+++ b/src/text-mp4.js
@@ -84,6 +84,7 @@ Textin4Parser.prototype.parseConfig = function(data) {
 }
 
 if (typeof exports !== 'undefined') {
+	exports.VTTin4Parser = VTTin4Parser;
 	exports.XMLSubtitlein4Parser = XMLSubtitlein4Parser;
 	exports.Textin4Parser = Textin4Parser;
 }