diff --git a/lib/btc/amount.js b/lib/btc/amount.js
index 57ac7fa0..f0df4f39 100644
--- a/lib/btc/amount.js
+++ b/lib/btc/amount.js
@@ -404,7 +404,7 @@ Amount.serializeUnsafe = function serializeUnsafe(value, exp, num) {
  * @throws on parse error
  */
 
-Amount.value = function value(value, num) {
+Amount.value = function _value(value, num) {
   if (util.isInt(value))
     return value;