diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index 8180e79..76a007d 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -409,6 +409,9 @@ class Certificado(object):
             return {}
 
         data = self._get_info_cer(rfc)
+        if not data:
+            return {}
+
         llave = self._get_info_key(password, data['rfc'])
         if not llave:
             return {}
diff --git a/source/app/main.py b/source/app/main.py
index a35833f..66da61d 100644
--- a/source/app/main.py
+++ b/source/app/main.py
@@ -45,7 +45,6 @@ api.add_route('/products', AppProducts(db))
 api.add_route('/invoices', AppInvoices(db))
 
 
-
 if DEBUG:
     api.add_sink(static, '/static')