diff --git a/remix-debug/src/debugger/debugger.js b/remix-debug/src/debugger/debugger.js
index f5caf802aa..3eb19bc198 100644
--- a/remix-debug/src/debugger/debugger.js
+++ b/remix-debug/src/debugger/debugger.js
@@ -110,7 +110,7 @@ Debugger.prototype.debugTx = function (tx, loadingCb) {
         this.vmDebuggerLogic.event.trigger('sourceLocationChanged', [sourceLocation])
       }
     })
-  })  
+  })
 
   this.vmDebuggerLogic = new VmDebuggerLogic(this.debugger, tx, this.step_manager, this.debugger.traceManager, this.debugger.codeManager, this.debugger.solidityProxy, this.debugger.callTree)
   this.vmDebuggerLogic.start()
diff --git a/remix-lib/src/util.js b/remix-lib/src/util.js
index 2bfadca12b..8fcf7a32c7 100644
--- a/remix-lib/src/util.js
+++ b/remix-lib/src/util.js
@@ -193,6 +193,19 @@ module.exports = {
     return /a265627a7a72305820([0-9a-f]{64})64736f6c6343([0-9a-f]{6})0032$/
   },
 
+  /**
+    * return a regex which extract the cbor encoded metadata : {"ipfs": <IPFS hash>, "solc": <compiler version>} from the bytecode.
+    * ref https://solidity.readthedocs.io/en/v0.6.6/metadata.html?highlight=ipfs#encoding-of-the-metadata-hash-in-the-bytecode
+    * @return {RegEx}
+    */
+  cborEncodedValueExtraction: function () {
+    return /64697066735822([0-9a-f]{68})64736f6c6343([0-9a-f]{6})0033$/
+  },
+
+  extractcborMetadata: function (value) {
+    return value.replace(this.cborEncodedValueExtraction(), '')
+  },
+
   extractSwarmHash: function (value) {
     value = value.replace(this.swarmHashExtraction(), '')
     value = value.replace(this.swarmHashExtractionPOC31(), '')
@@ -224,7 +237,10 @@ module.exports = {
       code1 = replaceLibReference(code1, pos)
     }
     code1 = this.extractSwarmHash(code1)
+    code1 = this.extractcborMetadata(code1)
     code2 = this.extractSwarmHash(code2)
+    code2 = this.extractcborMetadata(code2)
+
     if (code1 && code2 && code1.indexOf(code2) === 0) {
       return true
     }
diff --git a/remix-lib/test/util.js b/remix-lib/test/util.js
index 35577a009a..b7116cf9d1 100644
--- a/remix-lib/test/util.js
+++ b/remix-lib/test/util.js
@@ -70,10 +70,15 @@ tape('util.escapeRegExp', function (t) {
 })
 
 tape('util.compareByteCode', function (t) {
-  t.plan(1)
+  t.plan(2)
   const address = 'c2a9cef5420203c2672f0e4325cca774893cca98'
   const nullAddress = '0000000000000000000000000000000000000000'
   const deployedLibraryByteCode = '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'
   t.ok(util.compareByteCode(deployedLibraryByteCode, deployedLibraryByteCode.replace(address, nullAddress)), 'library bytecode should be the same')
+
+  // ballot on ropsten - 0x96d87AB604AEC7FB26C2E046CA5e6eBBB9D8b74D
+  const code1 = '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'
+  const code2 = '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'
+  t.ok(util.compareByteCode(code1, code2), 'should match even though cbor encoded metadatas are different')
 })