diff --git a/lib/cmds/blockchain/geth_commands.js b/lib/cmds/blockchain/geth_commands.js
index 21a8a2d7..ab71fda8 100644
--- a/lib/cmds/blockchain/geth_commands.js
+++ b/lib/cmds/blockchain/geth_commands.js
@@ -46,9 +46,9 @@ class GethCommands {
   determineNetworkType(config) {
     let cmd;
     if (config.networkType === 'testnet') {
-      cmd = "--testnet ";
+      cmd = "--testnet";
     } else if (config.networkType === 'olympic') {
-      cmd = "--olympic ";
+      cmd = "--olympic";
     } else if (config.networkType === 'custom') {
       cmd = "--networkid=" + config.networkId;
     }
diff --git a/lib/contracts/blockchain.js b/lib/contracts/blockchain.js
index 1fbf4dde..9f19b9e1 100644
--- a/lib/contracts/blockchain.js
+++ b/lib/contracts/blockchain.js
@@ -169,6 +169,10 @@ class Blockchain {
       self.getBlock(blockNumber, cb);
     });
 
+    this.events.setCommandHandler("blockchain:gasPrice", function(cb) {
+      self.getGasPrice(cb);
+    });
+
   }
 
   defaultAccount() {
@@ -191,6 +195,10 @@ class Blockchain {
     this.web3.eth.getBlock(blockNumber, cb);
   }
 
+  getGasPrice(cb) {
+    this.web3.eth.getGasPrice(cb);
+  }
+
   ContractObject(params) {
     return new this.web3.eth.Contract(params.abi);
   }
diff --git a/lib/contracts/contracts.js b/lib/contracts/contracts.js
index f74e38c2..5a544d3a 100644
--- a/lib/contracts/contracts.js
+++ b/lib/contracts/contracts.js
@@ -89,7 +89,13 @@ class ContractsManager {
         }
         callback();
       },
-      function prepareContractsFromCompilation(callback) {
+      function getGasPriceForNetwork(callback) {
+        if (self.contractsConfig.gasPrice) {
+          return callback(null, self.contractsConfig.gasPrice);
+        }
+        self.events.request("blockchain:gasPrice", callback);
+      },
+      function prepareContractsFromCompilation(gasPrice, callback) {
         let className, compiledContract, contractConfig, contract;
         for (className in self.compiledContracts) {
           compiledContract = self.compiledContracts[className];
@@ -108,7 +114,7 @@ class ContractsManager {
 
           contract.gas = (contractConfig && contractConfig.gas) || self.contractsConfig.gas || 'auto';
 
-          contract.gasPrice = contract.gasPrice || self.contractsConfig.gasPrice;
+          contract.gasPrice = contract.gasPrice || gasPrice;
           contract.type = 'file';
           contract.className = className;