diff --git a/src/app/execution/txFormat.js b/src/app/execution/txFormat.js
index f529167963..cd7946eeb9 100644
--- a/src/app/execution/txFormat.js
+++ b/src/app/execution/txFormat.js
@@ -2,7 +2,8 @@
 var ethJSABI = require('ethereumjs-abi')
 var ethJSUtil = require('ethereumjs-util')
 var BN = ethJSUtil.BN
-var helper = require('./txHelper')
+var remixLib = require('remix-lib')
+var helper = remixLib.execution.txHelper
 var TreeView = require('remix-debugger').ui.TreeView
 var executionContext = require('../../execution-context')
 
diff --git a/src/app/execution/txHelper.js b/src/app/execution/txHelper.js
deleted file mode 100644
index f11a9247e9..0000000000
--- a/src/app/execution/txHelper.js
+++ /dev/null
@@ -1,121 +0,0 @@
-'use strict'
-var ethJSABI = require('ethereumjs-abi')
-
-module.exports = {
-  encodeParams: function (funABI, args) {
-    var types = []
-    if (funABI.inputs && funABI.inputs.length) {
-      for (var i = 0; i < funABI.inputs.length; i++) {
-        var type = funABI.inputs[i].type
-        types.push(type)
-        if (args.length < types.length) {
-          args.push('')
-        }
-      }
-    }
-
-    // NOTE: the caller will concatenate the bytecode and this
-    //       it could be done here too for consistency
-    return ethJSABI.rawEncode(types, args)
-  },
-
-  encodeFunctionId: function (funABI) {
-    var types = []
-    if (funABI.inputs && funABI.inputs.length) {
-      for (var i = 0; i < funABI.inputs.length; i++) {
-        types.push(funABI.inputs[i].type)
-      }
-    }
-
-    return ethJSABI.methodID(funABI.name, types)
-  },
-
-  sortAbiFunction: function (contractabi) {
-    var abi = contractabi.sort(function (a, b) {
-      if (a.name > b.name) {
-        return -1
-      } else {
-        return 1
-      }
-    }).sort(function (a, b) {
-      if (a.constant === true) {
-        return -1
-      } else {
-        return 1
-      }
-    })
-    return abi
-  },
-
-  getConstructorInterface: function (abi) {
-    var funABI = { 'name': '', 'inputs': [], 'type': 'constructor', 'outputs': [] }
-    if (typeof abi === 'string') {
-      try {
-        abi = JSON.parse(abi)
-      } catch (e) {
-        console.log('exception retrieving ctor abi ' + abi)
-        return funABI
-      }
-    }
-
-    for (var i = 0; i < abi.length; i++) {
-      if (abi[i].type === 'constructor') {
-        funABI.inputs = abi[i].inputs || []
-        break
-      }
-    }
-
-    return funABI
-  },
-
-  getFunction: function (abi, fnName) {
-    for (var i = 0; i < abi.length; i++) {
-      if (abi[i].name === fnName) {
-        return abi[i]
-      }
-    }
-    return null
-  },
-
-  getFallbackInterface: function (abi) {
-    for (var i = 0; i < abi.length; i++) {
-      if (abi[i].type === 'fallback') {
-        return abi[i]
-      }
-    }
-  },
-
-  /**
-    * return the contract obj of the given @arg name. Uses last compilation result.
-    * return null if not found
-    * @param {String} name    - contract name
-    * @returns contract obj and associated file: { contract, file } or null
-    */
-  getContract: (contractName, contracts) => {
-    for (var file in contracts) {
-      if (contracts[file][contractName]) {
-        return { object: contracts[file][contractName], file: file }
-      }
-    }
-    return null
-  },
-
-  /**
-    * call the given @arg cb (function) for all the contracts. Uses last compilation result
-    * stop visiting when cb return true
-    * @param {Function} cb    - callback
-    */
-  visitContracts: (contracts, cb) => {
-    for (var file in contracts) {
-      for (var name in contracts[file]) {
-        if (cb({ name: name, object: contracts[file][name], file: file })) return
-      }
-    }
-  },
-
-  inputParametersDeclarationToString: function (abiinputs) {
-    var inputs = (abiinputs || []).map((inp) => inp.type + ' ' + inp.name)
-    return inputs.join(', ')
-  }
-
-}