diff --git a/pytrustnfe/nfe/assinatura.py b/pytrustnfe/nfe/assinatura.py
index b7558fc..9520ace 100644
--- a/pytrustnfe/nfe/assinatura.py
+++ b/pytrustnfe/nfe/assinatura.py
@@ -26,6 +26,10 @@ class Assinatura(object):
             digest_algorithm='sha1',
             c14n_algorithm='http://www.w3.org/TR/2001/REC-xml-c14n-20010315')
 
+        ns = {}
+        ns[None] = signer.namespaces['ds']
+        signer.namespaces = ns
+
         signed_root = signer.sign(
             xml_element, key=key, cert=cert,
             reference_uri=('#%s' % reference))
diff --git a/pytrustnfe/nfe/templates/NfeAutorizacao.xml b/pytrustnfe/nfe/templates/NfeAutorizacao.xml
index bc35bdf..aaeefb5 100644
--- a/pytrustnfe/nfe/templates/NfeAutorizacao.xml
+++ b/pytrustnfe/nfe/templates/NfeAutorizacao.xml
@@ -159,8 +159,9 @@
             </autXML>
             {% endfor %}
             {% endif %}
+            {% set count = 1 %}
             {% for det in NFe.infNFe.detalhes %}
-            <det nItem="1">
+            <det nItem="{{ count }}">
                 <prod>
                     {% with prod = det.prod %}
                     <cProd>{{ prod.cProd }}</cProd>
@@ -168,6 +169,7 @@
                     <xProd>{{ prod.xProd }}</xProd>
                     <NCM>{{ prod.NCM }}</NCM>
                     <NVE>{{ prod.NVE }}</NVE>
+                    <CEST>{{ prod.CEST }}</CEST>
                     <EXTIPI>{{ prod.EXTIPI }}</EXTIPI>
                     <CFOP>{{ prod.CFOP }}</CFOP>
                     <uCom>{{ prod.uCom }}</uCom>
@@ -611,6 +613,7 @@
                 {% if det.infAdProd %}
                 <infAdProd>{{ det.infAdProd }}<infAdProd>
                 {% endif %}
+                {% set count = count + 1 %}
             </det>
             {% endfor %}
             <total>
diff --git a/setup.py b/setup.py
index 8bac309..de95685 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@ long_description = pypandoc.convert('README.md', 'rst')
 
 setup(
     name="PyTrustNFe",
-    version="0.1.3",
+    version="0.1.4",
     author="Danimar Ribeiro",
     author_email='danimaribeiro@gmail.com',
     keywords=['nfe', 'mdf-e'],