diff --git a/src/SolidityFunction.ts b/src/SolidityFunction.ts
index 3bf5ddc7..b4ca729e 100644
--- a/src/SolidityFunction.ts
+++ b/src/SolidityFunction.ts
@@ -45,10 +45,10 @@ export class SolidityFunction {
     })
 
     this._constant = !!json.constant
-    this._payable = !!json.payable
+    this._payable = !!json.payable || json.stateMutability === 'payable'
 
     this.needsToBeTransaction =
-      json.payable || ('constant' in json && !json.constant) || json.stateMutability === 'nonpayable'
+      this._payable || ('constant' in json && !json.constant) || json.stateMutability === 'nonpayable'
 
     this._name = utils.transformToFullName(json)
   }
diff --git a/test/fixtures/Escrow.json b/test/fixtures/Escrow.json
new file mode 100644
index 00000000..b074904b
--- /dev/null
+++ b/test/fixtures/Escrow.json
@@ -0,0 +1,146 @@
+{
+  "_format": "hh-sol-artifact-1",
+  "contractName": "Escrow",
+  "sourceName": "contracts/utils/escrow/Escrow.sol",
+  "abi": [
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "payee",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "weiAmount",
+          "type": "uint256"
+        }
+      ],
+      "name": "Deposited",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "previousOwner",
+          "type": "address"
+        },
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "newOwner",
+          "type": "address"
+        }
+      ],
+      "name": "OwnershipTransferred",
+      "type": "event"
+    },
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": true,
+          "internalType": "address",
+          "name": "payee",
+          "type": "address"
+        },
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "weiAmount",
+          "type": "uint256"
+        }
+      ],
+      "name": "Withdrawn",
+      "type": "event"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "payee",
+          "type": "address"
+        }
+      ],
+      "name": "deposit",
+      "outputs": [],
+      "stateMutability": "payable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "payee",
+          "type": "address"
+        }
+      ],
+      "name": "depositsOf",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "owner",
+      "outputs": [
+        {
+          "internalType": "address",
+          "name": "",
+          "type": "address"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "renounceOwnership",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address",
+          "name": "newOwner",
+          "type": "address"
+        }
+      ],
+      "name": "transferOwnership",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "address payable",
+          "name": "payee",
+          "type": "address"
+        }
+      ],
+      "name": "withdraw",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    }
+  ],
+  "bytecode": "0x608060405234801561001057600080fd5b50600061001b61006a565b600080546001600160a01b0319166001600160a01b0383169081178255604051929350917f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0908290a35061006e565b3390565b61065f8061007d6000396000f3fe6080604052600436106100555760003560e01c806351cff8d91461005a578063715018a61461007c5780638da5cb5b14610091578063e3a9db1a146100bc578063f2fde38b146100e9578063f340fa0114610109575b600080fd5b34801561006657600080fd5b5061007a61007536600461049b565b61011c565b005b34801561008857600080fd5b5061007a6101d1565b34801561009d57600080fd5b506100a661025a565b6040516100b391906104c1565b60405180910390f35b3480156100c857600080fd5b506100dc6100d736600461049b565b610269565b6040516100b391906105e4565b3480156100f557600080fd5b5061007a61010436600461049b565b610284565b61007a61011736600461049b565b610344565b6101246103f6565b6001600160a01b031661013561025a565b6001600160a01b0316146101645760405162461bcd60e51b815260040161015b906105af565b60405180910390fd5b6001600160a01b038116600081815260016020526040812080549190559061018c90826103fa565b816001600160a01b03167f7084f5476618d8e60b11ef0d7d3f06914655adb8793e28ff7f018d4c76d505d5826040516101c591906105e4565b60405180910390a25050565b6101d96103f6565b6001600160a01b03166101ea61025a565b6001600160a01b0316146102105760405162461bcd60e51b815260040161015b906105af565b600080546040516001600160a01b03909116907f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e0908390a3600080546001600160a01b0319169055565b6000546001600160a01b031690565b6001600160a01b031660009081526001602052604090205490565b61028c6103f6565b6001600160a01b031661029d61025a565b6001600160a01b0316146102c35760405162461bcd60e51b815260040161015b906105af565b6001600160a01b0381166102e95760405162461bcd60e51b815260040161015b906104d5565b600080546040516001600160a01b03808516939216917f8be0079c531659141344cd1fd0a4f28419497f9722a3daafe3b4186f6b6457e091a3600080546001600160a01b0319166001600160a01b0392909216919091179055565b61034c6103f6565b6001600160a01b031661035d61025a565b6001600160a01b0316146103835760405162461bcd60e51b815260040161015b906105af565b6001600160a01b03811660009081526001602052604090205434906103a99082906105ed565b6001600160a01b038316600081815260016020526040908190209290925590517f2da466a7b24304f47e87fa2e1e5a81b9831ce54fec19055ce277ca2f39ba42c4906101c59084906105e4565b3390565b8047101561041a5760405162461bcd60e51b815260040161015b90610578565b6000826001600160a01b031682604051610433906104be565b60006040518083038185875af1925050503d8060008114610470576040519150601f19603f3d011682016040523d82523d6000602084013e610475565b606091505b50509050806104965760405162461bcd60e51b815260040161015b9061051b565b505050565b6000602082840312156104ac578081fd5b81356104b781610611565b9392505050565b90565b6001600160a01b0391909116815260200190565b60208082526026908201527f4f776e61626c653a206e6577206f776e657220697320746865207a65726f206160408201526564647265737360d01b606082015260800190565b6020808252603a908201527f416464726573733a20756e61626c6520746f2073656e642076616c75652c207260408201527f6563697069656e74206d61792068617665207265766572746564000000000000606082015260800190565b6020808252601d908201527f416464726573733a20696e73756666696369656e742062616c616e6365000000604082015260600190565b6020808252818101527f4f776e61626c653a2063616c6c6572206973206e6f7420746865206f776e6572604082015260600190565b90815260200190565b6000821982111561060c57634e487b7160e01b81526011600452602481fd5b500190565b6001600160a01b038116811461062657600080fd5b5056fea26469706673582212207138a4dfbe69899966f7c45a3a442d204a13a4e673824d47f349c508e254536c64736f6c63430008000033",
+  "deployedBytecode": "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",
+  "linkReferences": {},
+  "deployedLinkReferences": {}
+}
diff --git a/test/integration.escrow.ts b/test/integration.escrow.ts
new file mode 100644
index 00000000..0fdc08ee
--- /dev/null
+++ b/test/integration.escrow.ts
@@ -0,0 +1,46 @@
+import 'isomorphic-fetch'
+import * as expect from 'expect'
+import { ContractFactory, RequestManager, BigNumber } from '../src'
+import { testAllProviders } from './helpers/testAllProviders'
+import { abi, bytecode } from './fixtures/Escrow.json'
+
+describe('integration.escrow', function () {
+  testAllProviders(doTest)
+})
+
+function doTest(requestManager: RequestManager) {
+  it('should unlock the account', async () => {
+    const accounts = await requestManager.eth_accounts()
+    const account = accounts[0]
+    const accountUnlocked = await requestManager.personal_unlockAccount(account, '', 300)
+    console.log(`> Unlocking account status=${accountUnlocked}`)
+    expect(accountUnlocked).toEqual(true)
+  })
+
+  let EscrowContract = null
+
+  it('deploys a new contract', async function () {
+    this.timeout(100000)
+    const accounts = await requestManager.eth_accounts()
+    const account = accounts[0]
+
+    console.log(`> Account: ${account}`)
+    const factory = new ContractFactory(requestManager, abi)
+    EscrowContract = await factory.deploy({ data: bytecode, from: account, to: null })
+
+    console.log(`> Tx: ${EscrowContract.transactionHash}`)
+  })
+
+  it('deposit', async function () {
+    this.timeout(1000000)
+    const account = (await requestManager.eth_accounts())[0]
+    const depositResult = await EscrowContract.deposit(account, { from: account, value: 123 })
+    const tx = await requestManager.getConfirmedTransaction(depositResult)
+    expect(tx.status).toEqual('confirmed')
+    expect(typeof tx.receipt).toEqual('object')
+    expect(tx.receipt.status).toEqual(1)
+    const deposits = await EscrowContract.depositsOf(account, { from: account });
+    expect(deposits).toBeInstanceOf(BigNumber)
+    expect((deposits as BigNumber).eq(123)).toEqual(true)
+  })
+}