diff --git a/lib/6to5/transformation/transformers/_declarations.js b/lib/6to5/transformation/transformers/_declarations.js
index 88d4444564..9b7626aadc 100644
--- a/lib/6to5/transformation/transformers/_declarations.js
+++ b/lib/6to5/transformation/transformers/_declarations.js
@@ -2,7 +2,7 @@ var t = require("../../types");
 var _ = require("lodash");
 
 exports.BlockStatement =
-exports.Program = function (node, parent, file) {
+exports.Program = function (node) {
   _.each(node._declarations, function (declar) {
     node.body.unshift(t.variableDeclaration("var", [
       t.variableDeclarator(declar.id, declar.init)