diff --git a/test/unit/util_test.js b/test/unit/util_test.js
index b7d8ba528..eec3183fe 100644
--- a/test/unit/util_test.js
+++ b/test/unit/util_test.js
@@ -243,6 +243,11 @@ describe('util', function() {
         assert.equal(result, false)
       })
 
+      it('should return true when given a hex string with hex-prefix', function() {
+        var result = util.isHex('0xc3ab8ff13720e8ad9047dd39466b3c8974e592c2fa383d4a3960714caef0c4f2')
+        assert.equal(result, true)
+      })
+
     })
   })
 })
diff --git a/ui/app/util.js b/ui/app/util.js
index facaef3ee..a519ab5b4 100644
--- a/ui/app/util.js
+++ b/ui/app/util.js
@@ -212,6 +212,7 @@ function readableDate (ms) {
 }
 
 function isHex (str) {
+  if (str.startsWith('0x')) str = str.replace('0x', '')
   if (str.match(/[g-zG-Z]/) || str.match(/\W/)) return false
   return true
 }