diff --git a/lib/blockchain.js b/lib/blockchain.js
index 5c2c52091..d0044d5ae 100644
--- a/lib/blockchain.js
+++ b/lib/blockchain.js
@@ -24,6 +24,7 @@ startChain = function(env) {
   }
 
   cmd += "--mine ";
+  cmd += "--maxpeers 0 ";
 
   if (config.account.password !== void 0) {
     cmd += "--password " + config.account.password + " ";