diff --git a/gulpfile.js b/gulpfile.js
index cf79da098..804fe9475 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -102,7 +102,7 @@ const compilerMinimalist = webpack({
 
 function minify (name) {
   const code = String(fs.readFileSync(DIST + '/' + name + '.js'))
-  const result = uglify.minify(code, {
+  const result = uglify.minify({ [name + '.js']: code }, {
     sourceMap: {
       url: name + '.map'
     },