diff --git a/ui/app/components/hex-as-decimal-input.js b/ui/app/components/hex-as-decimal-input.js
index d24fdcb7b..4a71e9585 100644
--- a/ui/app/components/hex-as-decimal-input.js
+++ b/ui/app/components/hex-as-decimal-input.js
@@ -139,7 +139,7 @@ HexAsDecimalInput.prototype.constructWarning = function () {
 }
 
 function hexify (decimalString) {
-  const hexBN = new BN(decimalString.split('.')[0], 10)
+  const hexBN = new BN(parseInt(decimalString), 10)
   return '0x' + hexBN.toString('hex')
 }