diff --git a/lib/deploy.js b/lib/deploy.js
index 2f34bea7..5700f0a1 100644
--- a/lib/deploy.js
+++ b/lib/deploy.js
@@ -136,12 +136,12 @@ Deploy.prototype.deployContract = function(contract, params, callback) {
         }
         self.logger.error(errMsg);
         contract.error = errMsg;
-        callback(new Error(err));
+        return callback(new Error(err));
       } else if (transaction.address !== undefined) {
         self.logger.info(contract.className + " deployed at " + transaction.address);
         contract.deployedAddress = transaction.address;
         contract.transactionHash = transaction.transactionHash;
-        callback(null, transaction.address);
+        return callback(null, transaction.address);
       }
     });