diff --git a/beacon_chain/genesis.nim b/beacon_chain/genesis.nim
index b8e4f56a7..f40f96084 100644
--- a/beacon_chain/genesis.nim
+++ b/beacon_chain/genesis.nim
@@ -36,9 +36,8 @@ proc processDeposit(d: DepositCollector, web3: Web3): Future[BeaconState] {.asyn
 proc getGenesisFromEth1*(conf: BeaconNodeConf): Future[BeaconState] {.async.} =
   let web3 = await newWeb3(conf.depositWeb3Url)
 
-  var contractAddress = Address.fromHex(conf.depositContractAddress)
-  var defaultAccount: Address
-  var ns = web3.contractSender(DepositContract, contractAddress, defaultAccount)
+  let contractAddress = Address.fromHex(conf.depositContractAddress)
+  let ns = web3.contractSender(DepositContract, contractAddress)
 
   var deposits = DepositCollector()
   deposits.queue = newAsyncQueue[QueueElement]()
diff --git a/beacon_chain/validator_keygen.nim b/beacon_chain/validator_keygen.nim
index 216171a00..9deb4736e 100644
--- a/beacon_chain/validator_keygen.nim
+++ b/beacon_chain/validator_keygen.nim
@@ -62,9 +62,9 @@ proc main(totalValidators: int, outputDir: string, generateFakeKeys: bool, depos
     writeFile(depositFn, dp)
 
     if not web3.isNil:
-      let depositContract = web3.contractSender(DepositContract, contractAddress, eth1Addresses[i])
-      depositContract.value = 32.u256.ethToWei
-      let tx = await depositContract.deposit(Bytes48(pubKey.getBytes()), Bytes32(withdrawalCredentials.data), Bytes96(dp.data.signature.getBytes()))
+      web3.defaultAccount = eth1Addresses[i]
+      let depositContract = web3.contractSender(DepositContract, contractAddress)
+      let tx = await depositContract.deposit(Bytes48(pubKey.getBytes()), Bytes32(withdrawalCredentials.data), Bytes96(dp.data.signature.getBytes())).send(value = 32.u256.ethToWei)
 
   if generateFakeKeys:
     echo "Keys generated by this tool are only for testing!"