diff --git a/lib/cmds/simulator.js b/lib/cmds/simulator.js
index 8f2f22f71..a68b27e74 100644
--- a/lib/cmds/simulator.js
+++ b/lib/cmds/simulator.js
@@ -17,8 +17,8 @@ class Simulator {
       process.exit();
     }
 
-    cmds.push("-p " + (this.blockchainConfig.rpcPort || options.port || 8545));
-    cmds.push("-h " + (this.blockchainConfig.rpcHost || options.host || 'localhost'));
+    cmds.push("-p " + (options.port || this.blockchainConfig.rpcPort || 8545));
+    cmds.push("-h " + (options.host || this.blockchainConfig.rpcHost || 'localhost'));
     cmds.push("-a " + (options.numAccounts || 10));
     cmds.push("-e " + (options.defaultBalance || 100));
     cmds.push("-l " + (options.gasLimit || 8000000));