diff --git a/build/lib/util.js b/build/lib/util.js
index 165237f57a0..faa55b03759 100644
--- a/build/lib/util.js
+++ b/build/lib/util.js
@@ -266,4 +266,11 @@ exports.getVersion = function (root) {
 	}
 
 	return version;
+};
+
+exports.rebase = function (count) {
+	return rename(function (f) {
+		var parts = f.dirname.split(/[\/\\]/);
+		f.dirname = parts.slice(count).join(path.sep);
+	});
 };
\ No newline at end of file
diff --git a/gulpfile.js b/gulpfile.js
index 4878028e121..222f2b2ef4d 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -124,13 +124,6 @@ gulp.task('test', function () {
 		.once('end', function () { process.exit(); });
 });
 
-function rebase(count) {
-	return rename(function (f) {
-		var parts = f.dirname.split(/[\/\\]/);
-		f.dirname = parts.slice(count).join(path.sep);
-	});
-}
-
 gulp.task('mixin', function () {
 	var repo = process.env['VSCODE_MIXIN_REPO'];
 
@@ -159,7 +152,7 @@ gulp.task('mixin', function () {
 
 	var all = remote(url, opts)
 		.pipe(zip.src())
-		.pipe(rebase(1));
+		.pipe(util.rebase(1));
 
 	if (quality) {
 		var build = all.pipe(filter('build/**'));
@@ -167,7 +160,7 @@ gulp.task('mixin', function () {
 
 		var mixin = all
 			.pipe(filter('quality/' + quality + '/**'))
-			.pipe(rebase(2))
+			.pipe(util.rebase(2))
 			.pipe(productJsonFilter)
 			.pipe(buffer())
 			.pipe(json(function (patch) {