diff --git a/react-packager/src/JSTransformer/worker/__tests__/minify-test.js b/react-packager/src/JSTransformer/worker/__tests__/minify-test.js
index 78450879..184a4aef 100644
--- a/react-packager/src/JSTransformer/worker/__tests__/minify-test.js
+++ b/react-packager/src/JSTransformer/worker/__tests__/minify-test.js
@@ -39,7 +39,7 @@ describe('Minification:', () => {
     expect(uglify.minify).toBeCalledWith(code, objectContaining({
       fromString: true,
       inSourceMap: map,
-      outSourceMap: filename,
+      outSourceMap: true,
     }));
   });
 
diff --git a/react-packager/src/JSTransformer/worker/minify.js b/react-packager/src/JSTransformer/worker/minify.js
index 089cfc78..680cb885 100644
--- a/react-packager/src/JSTransformer/worker/minify.js
+++ b/react-packager/src/JSTransformer/worker/minify.js
@@ -14,7 +14,7 @@ function minify(filename, code, sourceMap) {
   const minifyResult = uglify.minify(code, {
     fromString: true,
     inSourceMap: sourceMap,
-    outSourceMap: filename,
+    outSourceMap: true,
     output: {
       ascii_only: true,
       screw_ie8: true,