diff --git a/lib/contracts/deploy_manager.js b/lib/contracts/deploy_manager.js
index edcd49e71..2ddbea33a 100644
--- a/lib/contracts/deploy_manager.js
+++ b/lib/contracts/deploy_manager.js
@@ -39,7 +39,7 @@ class DeployManager {
           self.events.emit('contractsDeployed', contractsManager);
           return done();
         } 
-        return callback(contractsManager, null);
+        return callback(null, contractsManager);
       },
       function checkWeb3IsConnected(contractsManager, callback) {
         if (!self.web3) {