diff --git a/boot/boot.js b/boot/boot.js
index 8d2d877c14..7598a15e7b 100644
--- a/boot/boot.js
+++ b/boot/boot.js
@@ -410,7 +410,7 @@ Given an extension, get the correct encoding for that file.
 defaults to utf8
 */
 $tw.utils.getTypeEncoding = function(ext) {
-	var extensionInfo = $tw.util.getFileExtensionInfo(ext),
+	var extensionInfo = $tw.utils.getFileExtensionInfo(ext),
 		type = extensionInfo ? extensionInfo.type : null,
 		typeInfo = type ? $tw.config.contentTypeInfo[type] : null;
 	return typeInfo ? typeInfo.encoding : "utf8";