diff --git a/source/app/controllers/util.py b/source/app/controllers/util.py
index 0c1af30..6d7d4ec 100644
--- a/source/app/controllers/util.py
+++ b/source/app/controllers/util.py
@@ -331,8 +331,17 @@ class Certificado(object):
         result = _call(args.format(self._path_cer, 'serial'))
         serie = result.split('=')[1].split('\n')[0][1::2]
         result = _call(args.format(self._path_cer, 'subject'))
-        #~ rfc = result.split('=')[5].split('/')[0].strip()
-        rfc = result.split('x500UniqueIdentifier = ')[1][:13].strip()
+        #~ Verificar si es por la version de OpenSSL
+        t1 = 'x500UniqueIdentifier = '
+        t2 = 'x500UniqueIdentifier='
+        if t1 in result:
+            rfc = result.split(t1)[1][:13].strip()
+        elif t2 in result:
+            rfc = result.split(t2)[1][:13].strip()
+        else:
+            self.error = 'No se pudo obtener el RFC del certificado'
+            return data
+
 
         if not DEBUG:
             if not rfc == session_rfc: