diff --git a/src/js/amount.js b/src/js/amount.js
index 2c8978cbf..2ad363fc5 100644
--- a/src/js/amount.js
+++ b/src/js/amount.js
@@ -720,9 +720,7 @@ Amount.prototype.is_native = function () {
 
 Amount.prototype.is_negative = function () {
   return this._value instanceof BigInteger
-          ? this.is_native
-            ? this._value.compareTo(BigInteger.ZERO) < 0
-            : this._is_negative
+          ? this._is_negative
           : false;                          // NaN is not negative
 };