diff --git a/lib/cmds/blockchain/blockchain.js b/lib/cmds/blockchain/blockchain.js
index 4b1a9bd4..d41681b3 100644
--- a/lib/cmds/blockchain/blockchain.js
+++ b/lib/cmds/blockchain/blockchain.js
@@ -37,7 +37,7 @@ var Blockchain = function(options) {
 
 Blockchain.prototype.runCommand = function(cmd) {
   console.log(("running: " + cmd.underline).green);
-  return shelljs.exec(cmd, {async:true});
+  return shelljs.exec(cmd);
 };
 
 Blockchain.prototype.run = function() {
@@ -49,7 +49,7 @@ Blockchain.prototype.run = function() {
   console.log("===============================================================================".magenta);
   var address = this.initChainAndGetAddress();
   this.client.mainCommand(address, function(cmd) {
-    self.runCommand(cmd);
+    self.runCommand(cmd, {async:true});
   });
 };