diff --git a/lib/js/thrift.js b/lib/js/thrift.js
index 860cb99..91c4466 100644
--- a/lib/js/thrift.js
+++ b/lib/js/thrift.js
@@ -85,7 +85,9 @@
     'INVALID_MESSAGE_TYPE' : 2,
     'WRONG_METHOD_NAME' : 3,
     'BAD_SEQUENCE_ID' : 4,
-    'MISSING_RESULT' : 5
+    'MISSING_RESULT' : 5,
+    'INTERNAL_ERROR' : 6,
+    'PROTOCOL_ERROR' : 7
 };
 
 Thrift.TApplicationException = function(message, code) {