diff --git a/tutorial/nodejs/NodeClient.js b/tutorial/nodejs/NodeClient.js
index 3d09709..74aa55a 100644
--- a/tutorial/nodejs/NodeClient.js
+++ b/tutorial/nodejs/NodeClient.js
@@ -68,7 +68,7 @@
 work.num2 = 10;
 
 client.calculate(1, work, function(err, message) {
-  console.log('15-10=' + message.value);
+  console.log('15-10=' + message);
 
   client.getStruct(1, function(err, message){
     console.log('Check log: ' + message.value);