diff --git a/pytrustnfe/nfse/mga/__init__.py b/pytrustnfe/nfse/mga/__init__.py
index ee0cbbc..486b009 100644
--- a/pytrustnfe/nfse/mga/__init__.py
+++ b/pytrustnfe/nfse/mga/__init__.py
@@ -47,7 +47,7 @@ def _send(certificado, method, **kwargs):
     client = Client(base_url, transport=transport)
     response = client.service[method](xml_send)
 
-    response, obj = sanitize_response(response.encode('utf-8'))
+    response, obj = sanitize_response(response)
     return {
         'sent_xml': str(xml_send),
         'received_xml': str(response),
diff --git a/pytrustnfe/nfse/mga/assinatura.py b/pytrustnfe/nfse/mga/assinatura.py
index 3b302fe..aaa48fd 100644
--- a/pytrustnfe/nfse/mga/assinatura.py
+++ b/pytrustnfe/nfse/mga/assinatura.py
@@ -34,7 +34,7 @@ class Assinatura(object):
         signed_root = signer.sign(
             element_to_be_signed, key=key.encode(), cert=cert.encode())
         if reference:
-            element_signed = signed_root.find(".//*[@Id='%s']" % reference)
+            element_signed = xml_element.find(".//*[@Id='%s']" % reference)
 
             signature = signed_root.find(
                 ".//{http://www.w3.org/2000/09/xmldsig#}Signature")
diff --git a/pytrustnfe/nfse/mga/templates/CancelarNfse.xml b/pytrustnfe/nfse/mga/templates/CancelarNfse.xml
index 6c95398..46cdd74 100644
--- a/pytrustnfe/nfse/mga/templates/CancelarNfse.xml
+++ b/pytrustnfe/nfse/mga/templates/CancelarNfse.xml
@@ -1,6 +1,6 @@
-<CancelarNfseEnvio xmlns="http://www.abrasf.org.br/ABRASF/arquivos/nfse.xsd">
+<CancelarNfseEnvio xmlns="http://www.abrasf.org.br/nfse.xsd">
     <Pedido>
-        <InfPedidoCancelamento Id="pedidoCancelamento_{{ cancelamento.numero_nfse }}">
+        <InfPedidoCancelamento Id="Cancelamento_NF{{ cancelamento.numero_nfse }}">
             <IdentificacaoNfse>
                 <Numero>{{ cancelamento.numero_nfse }}</Numero>
                 <CpfCnpj>
diff --git a/setup.py b/setup.py
index 9f9c851..5cebe76 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 from setuptools import setup, find_packages
 
 
-VERSION = "1.0.0"
+VERSION = "1.0.1"
 
 
 setup(