diff --git a/lib/6to5/file.js b/lib/6to5/file.js
index 5ab96ea05e..dabcf7adb8 100644
--- a/lib/6to5/file.js
+++ b/lib/6to5/file.js
@@ -1,5 +1,7 @@
 module.exports = File;
 
+var SHEBANG_REGEX = /^\#\!.*/;
+
 var transform = require("./transform");
 var util      = require("./util");
 var _         = require("lodash");
@@ -32,12 +34,23 @@ File.normaliseOptions = function (opts) {
   return opts;
 };
 
-File.prototype.parse = function (code) {
-  // remove shebang
-  code = code.replace(/^\#\!.*/, "");
+File.prototype.parseShebang = function (code) {
+  var shebangMatch = code.match(SHEBANG_REGEX);
+  if (shebangMatch) {
+    this.shebang = shebangMatch[0];
 
+    // remove shebang
+    code = code.replace(SHEBANG_REGEX, "");
+  }
+
+  return code;
+};
+
+File.prototype.parse = function (code) {
   var self = this;
 
+  code = this.parseShebang(code);
+
   return util.parse(this.opts, code, function (tree) {
     return self.transform(tree);
   });
@@ -55,6 +68,10 @@ File.prototype.transform = function (ast) {
 
   var result = util.generate(ast, opts);
 
+  if (this.shebang) {
+    result.code = this.shebang + result.code;
+  }
+
   if (opts.sourceMap === "inline") {
     result.code += "\n" + util.sourceMapToComment(result.map);
   }