diff --git a/lib/index.js b/lib/index.js
index 54362222dd4996818e3a65682b003e149c3d0e0b..8e8be3252b5b017b88f3ee8158e4ee7bc285b286 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -64,7 +64,7 @@ var Worker = function () {
 	}, {
 		key: "postMessage",
 		value: function postMessage(msg) {
-			this.child.send(JSON.stringify({ data: msg }));
+			this.child.send(JSON.stringify({ data: msg }, null, 0));
 		}
 	}, {
 		key: "terminate",
diff --git a/package.json b/package.json
index 31a26135078fb6bbf6dd6a55a6230fa406758d93..f5bc450cf7f5681957c739f0f35430d68565337f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tiny-worker",
-  "version": "2.0.2",
+  "version": "2.0.3",
   "description": "Tiny WebWorker for Server",
   "main": "lib/index.js",
   "scripts": {
diff --git a/src/index.js b/src/index.js
index b024d6ee9ba867f6b0b71869e959c94c61d29d7d..d3de0371803876474728ff539ca2bc1243142041 100644
--- a/src/index.js
+++ b/src/index.js
@@ -48,7 +48,7 @@ class Worker {
 	}
 
 	postMessage (msg) {
-		this.child.send(JSON.stringify({data: msg}));
+		this.child.send(JSON.stringify({data: msg}, null, 0));
 	}
 
 	terminate () {