diff --git a/js/directives.js b/js/directives.js
index f3fec639a..5061580b7 100644
--- a/js/directives.js
+++ b/js/directives.js
@@ -45,9 +45,10 @@ angular.module('copayApp.directives')
         link: function(scope, element, attrs, ctrl) {
           var val = function(value) {
             var availableBalanceNum = Number(($rootScope.availableBalance * config.unitToSatoshi).toFixed(0));
-            var vNum = Number((value * config.unitToSatoshi).toFixed(0)) + feeSat;
+            var vNum = Number((value * config.unitToSatoshi).toFixed(0));
 
             if (typeof vNum == "number" && vNum > 0) {
+              vNum = vNum + feeSat;
               if (availableBalanceNum < vNum || isNaN(availableBalanceNum)) {
                 ctrl.$setValidity('enoughAmount', false);
                 scope.notEnoughAmount = true;