diff --git a/src/js/controller.js b/src/js/controller.js
index 8353f31..71a2c20 100644
--- a/src/js/controller.js
+++ b/src/js/controller.js
@@ -56,7 +56,7 @@ angular.module('focaModalFactura')
 
                 $scope.tieneAlMenosUno = function() {
                     var result = $scope.facturas.filter(function(a) {return a.checked === true;});
-                    return result.length === 0 ? true : false;
+                    return !result.length;
                 };
 
                 function llenarDatos(res) {