diff --git a/lib/modules/contracts_manager/index.js b/lib/modules/contracts_manager/index.js
index ceb87ac7..689473d8 100644
--- a/lib/modules/contracts_manager/index.js
+++ b/lib/modules/contracts_manager/index.js
@@ -113,9 +113,10 @@ class ContractsManager {
           const abi = contract.abiDefinition.find(definition => definition.name === req.body.method);
           const funcCall = (abi.constant === true || abi.stateMutability === 'view' || abi.stateMutability === 'pure') ? 'call' : 'send';
 
-          self.events.request("blockchain:contract:create", {abi: contract.abiDefinition, address: contract.deployedAddress}, (contractObj) => {
+          self.events.request("blockchain:contract:create", {abi: contract.abiDefinition, address: contract.deployedAddress}, async (contractObj) => {
             try {
-              contractObj.methods[req.body.method].apply(this, req.body.inputs)[funcCall]({from: account, gasPrice: req.body.gasPrice}, (error, result) => {
+              const gas = await contractObj.methods[req.body.method].apply(this, req.body.inputs).estimateGas();
+              contractObj.methods[req.body.method].apply(this, req.body.inputs)[funcCall]({from: account, gasPrice: req.body.gasPrice, gas}, (error, result) => {
                 if (error) {
                   return res.send({result: error.message});
                 }