diff --git a/apps/remix-ide-e2e/src/tests/erc721.test.ts b/apps/remix-ide-e2e/src/tests/erc721.test.ts
new file mode 100644
index 0000000000..337af93661
--- /dev/null
+++ b/apps/remix-ide-e2e/src/tests/erc721.test.ts
@@ -0,0 +1,43 @@
+'use strict'
+
+import { NightwatchBrowser } from 'nightwatch'
+import init from '../helpers/init'
+import examples from '../examples/example-contracts'
+
+const sources = []
+
+module.exports = {
+  before: function (browser: NightwatchBrowser, done: VoidFunction) {
+    init(browser, done)
+  },
+  '@sources': function () {
+    return sources
+  },
+  'Deploy SampleERC721 whose bytecode is very similar to ERC721': function (browser: NightwatchBrowser) {
+    browser.click('*[data-id="workspaceCreate"]')
+      // create contract
+      .waitForElementVisible('*[data-id="modalDialogCustomPromptTextCreate"]')
+      .waitForElementVisible('[data-id="fileSystemModalDialogModalFooter-react"] > button')
+      // eslint-disable-next-line dot-notation
+      .execute(function () { document.querySelector('*[data-id="modalDialogCustomPromptTextCreate"]')['value'] = 'workspace_erc721' })
+      .click('select[id="wstemplate"]')
+      .click('select[id="wstemplate"] option[value=ozerc721]')
+      .waitForElementPresent('[data-id="fileSystemModalDialogModalFooter-react"] .modal-ok')
+      .execute(function () { (document.querySelector('[data-id="fileSystemModalDialogModalFooter-react"] .modal-ok') as HTMLElement).click() })
+      .pause(100)
+      .waitForElementVisible('*[data-id="treeViewLitreeViewItemcontracts"]')
+      .waitForElementVisible('*[data-id="treeViewLitreeViewItemcontracts/SampleERC721.sol"]')
+      // deploy contract
+      .clickLaunchIcon('udapp')
+      .selectContract('SampleERC721')
+      .createContract('E, E')
+      .testFunction('last',
+      {
+        status: 'true Transaction mined and execution succeed',
+        'decoded input': {
+          'string tokenName': 'E',
+          'string tokenSymbol': 'E'
+        }
+      }).end()
+  }
+}
diff --git a/libs/remix-lib/src/util.ts b/libs/remix-lib/src/util.ts
index ff7f2e03b8..429f950ec9 100644
--- a/libs/remix-lib/src/util.ts
+++ b/libs/remix-lib/src/util.ts
@@ -184,6 +184,15 @@ export function cborEncodedValueExtraction () {
   return /64697066735822([0-9a-f]{68})64736f6c6343([0-9a-f]{6})0033$/
 }
 
+/**
+  * return a regex which extract the input parameters from the bytecode
+  *
+  * @return {RegEx}
+  */
+export function inputParametersExtraction () {
+  return /64697066735822[0-9a-f]{68}64736f6c6343[0-9a-f]{6}0033(.*)$/
+}
+
 export function extractcborMetadata (value) {
   return value.replace(cborEncodedValueExtraction(), '')
 }
@@ -195,6 +204,10 @@ export function extractSwarmHash (value) {
   return value
 }
 
+export function extractinputParameters (value) {
+  return value.replace(inputParametersExtraction(), '')
+}
+
 /**
   * Compare bytecode. return true if the code is equal (handle swarm hash and library references)
   * @param {String} code1 - the bytecode that is actually deployed (contains resolved library reference and a potentially different swarmhash)
@@ -218,14 +231,16 @@ export function compareByteCode (code1, code2) {
     code2 = replaceLibReference(code2, pos)
     code1 = replaceLibReference(code1, pos)
   }
+  code1 = extractinputParameters(code1)  
   code1 = extractSwarmHash(code1)
   code1 = extractcborMetadata(code1)
+  code2 = extractinputParameters(code2)
   code2 = extractSwarmHash(code2)
   code2 = extractcborMetadata(code2)
 
   if (code1 && code2) {
     const compare = stringSimilarity.compareTwoStrings(code1, code2)
-    return compare > 0.93
+    return compare == 1
   }
 
   return false