diff --git a/src/js/controller.js b/src/js/controller.js
index bceb331..8925bfa 100644
--- a/src/js/controller.js
+++ b/src/js/controller.js
@@ -543,6 +543,9 @@ angular.module('focaParametros')
             });
 
             function nombreFuncion(string) {
+
+                if(!string) return;
+
                 var texto = 'seleccionar';
                 var arr = string.split(' ');
                 arr.forEach(function(palabra) {