diff --git a/source/app/controllers/pacs/cfdi_cert.py b/source/app/controllers/pacs/cfdi_cert.py
index d8ca7fc..2b0d862 100644
--- a/source/app/controllers/pacs/cfdi_cert.py
+++ b/source/app/controllers/pacs/cfdi_cert.py
@@ -148,8 +148,16 @@ class SATCertificate(object):
         key = xmlsec.Key.from_memory(self.key_pem, xmlsec.constants.KeyDataFormatPem)
         ctx.key = key
         ctx.sign(node)
+
         node = xmlsec.tree.find_node(tree, 'X509Certificate')
         node.text = self.cer_txt
+
+        node = xmlsec.tree.find_node(tree, 'SignatureValue')
+        node.text = node.text.replace('\n', '')
+
+        node = xmlsec.tree.find_node(tree, 'Modulus')
+        node.text = node.text.replace('\n', '')
+
         return tree
 
     @property