diff --git a/lib/blockchain.js b/lib/blockchain.js
index cb67b2d1..bfa4794b 100644
--- a/lib/blockchain.js
+++ b/lib/blockchain.js
@@ -37,10 +37,12 @@ Blockchain.prototype.generate_basic_command = function() {
 
   if(config.mine)
     cmd += "--mine ";
-  
-  if (config.genesisBlock !== void 0) {
+
+  if (config.minerthreads !== void 0)
+    cmd += "--minerthreads \"" + config.minerthreads + "\" ";
+
+  if (config.genesisBlock !== void 0)
     cmd += "--genesis=\"" + config.genesisBlock + "\" ";
-  }
 
   if (config.whisper) {
     cmd += "--shh ";
@@ -49,7 +51,6 @@ Blockchain.prototype.generate_basic_command = function() {
 
   cmd += '--rpcapi "' + rpc_api.join(',') + '" ';
 
-  //TODO: this should be configurable
   cmd += "--maxpeers " + config.maxPeers + " ";
 
   if (config.account.password !== void 0) {