diff --git a/lib/bcoin/mtx.js b/lib/bcoin/mtx.js
index 6701fc81..1842d8ba 100644
--- a/lib/bcoin/mtx.js
+++ b/lib/bcoin/mtx.js
@@ -1004,7 +1004,7 @@ MTX.prototype.selectCoins = function selectCoins(coins, options) {
   }
 
   function total() {
-    if (options.subtractFee != null)
+    if (options.subtractFee || options.subtractFee === 0)
       return outputValue;
     return outputValue + fee;
   }