diff --git a/src/app/ui/universal-dapp-ui.js b/src/app/ui/universal-dapp-ui.js
index 423f5271a7..a9bab5991c 100644
--- a/src/app/ui/universal-dapp-ui.js
+++ b/src/app/ui/universal-dapp-ui.js
@@ -178,7 +178,7 @@ UniversalDAppUI.prototype.renderInstanceFromABI = function (contractABI, address
     const amount = document.querySelector('#value').value
     if (amount !== '0') {
       // check for numeric and receive/fallback
-      if (!isNumeric(amount)) {
+      if (!helper.isNumeric(amount)) {
         setLLIError('Value to send should be a number')
       } else if (!receive && !(fallback && fallback.stateMutability === 'payable')) {
         setLLIError("In order to receive Ether transfer the contract should have either 'receive' or payable 'fallback' function")
@@ -186,7 +186,7 @@ UniversalDAppUI.prototype.renderInstanceFromABI = function (contractABI, address
     }
     if (calldata) {
       if (calldata.length > 3 && calldata.substr(0, 2) === '0x') {
-        if (!isHexadecimal(calldata.substr(2, calldata.length))) {
+        if (!helper.isHexadecimal(calldata.substr(2, calldata.length))) {
           setLLIError('the calldata should be a valid hexadecimal value.')
         }
       }
@@ -197,14 +197,6 @@ UniversalDAppUI.prototype.renderInstanceFromABI = function (contractABI, address
     if ((calldata || amount !== '0') && !error) self.runTransaction(false, args, null, calldata, null)
   }
 
-  function isHexadecimal (value) {
-    return /^[0-9a-fA-F]+$/.test(value)
-  }
-
-  function isNumeric (value) {
-    return /^\+?(0|[1-9]\d*)$/.test(value)
-  }
-
   contractActionsWrapper.appendChild(lowLevelInteracions)
   return instance
 }
diff --git a/src/lib/helper.js b/src/lib/helper.js
index 8628418f5e..93f688e4f9 100644
--- a/src/lib/helper.js
+++ b/src/lib/helper.js
@@ -44,6 +44,12 @@ module.exports = {
   checkSpecialChars (name) {
     return name.match(/[:*?"<>\\'|]/) != null
   },
+  isHexadecimal (value) {
+    return /^[0-9a-fA-F]+$/.test(value)
+  },
+  isNumeric (value) {
+    return /^\+?(0|[1-9]\d*)$/.test(value)
+  },
   find: find
 }
 
diff --git a/test-browser/tests/specialFunctions.js b/test-browser/tests/specialFunctions.js
index 4e011388a5..2efbcc9521 100644
--- a/test-browser/tests/specialFunctions.js
+++ b/test-browser/tests/specialFunctions.js
@@ -11,21 +11,20 @@ module.exports = {
   },
   'Use special functions receive/fullback': function (browser) {
     browser.waitForElementVisible('#icon-panel', 10000)
-    .testContracts('receiveAndfFallback.sol', sources[0]['browser/Untitled.sol'], ['CheckSpecials'])
-    .clickLaunchIcon('udapp'
-      .selectContract('CheckSpecials')
-      .createContract('')
-      .clickInstance(0)
-      .perform((done) => {
-        browser.getAddressAtPosition(0, (address) => {
-          browser.sendLowLevelTx(address, '0', '0xaa')
-          .journalLastChild('dd')
-          .waitForElementVisible('label[id="deployAndRunLLTxError"]')
-          .assert.containsText('label[id="deployAndRunLLTxError"]', '')
-          .perform(done)
-        })
+    .testContracts('browser/receiveAndfFallback.sol', sources[0]['receiveAndfFallback.sol'], ['CheckSpecials'])
+    .clickLaunchIcon('udapp')
+    .selectContract('CheckSpecials')
+    .createContract('')
+    .clickInstance(0)
+    .perform((done) => {
+      browser.getAddressAtPosition(0, (address) => {
+        browser.sendLowLevelTx(address, '0', '0xaa')
+        .journalLastChild('dd')
+        .waitForElementVisible('label[id="deployAndRunLLTxError"]')
+        .assert.containsText('label[id="deployAndRunLLTxError"]', '')
+        .perform(done)
       })
-    )
+    })
   },
   tearDown: sauce
 }