diff --git a/src/js/app.js b/src/js/app.js
index 5a91a79..6ee225f 100644
--- a/src/js/app.js
+++ b/src/js/app.js
@@ -6,7 +6,7 @@ angular.module('focaFiltros', [])
         };
     })
     .filter('rellenarDigitos', function() {
-        return function(valor, cantidad, caracter) {
+        return function(valor, cantidad, caracter = 0) {
             var ceros = '';
             for (var i = 0; i < cantidad; i++) {
                 ceros += caracter;