diff --git a/pytrustnfe/utils.py b/pytrustnfe/utils.py
index b53ba37..40cc12e 100644
--- a/pytrustnfe/utils.py
+++ b/pytrustnfe/utils.py
@@ -85,6 +85,8 @@ def _find_node(xml, node):
 def gerar_nfeproc(envio, recibo):
     NSMAP = {None: 'http://www.portalfiscal.inf.br/nfe'}
     root = ET.Element("nfeProc", versao="3.10", nsmap=NSMAP)
+    if 'encoding="utf-8"' in recibo:
+        recibo = re.sub('encoding="utf-8"', '', recibo)
     docEnvio = ET.fromstring(envio)
     docRecibo = ET.fromstring(recibo)
 
diff --git a/pytrustnfe/xml/__init__.py b/pytrustnfe/xml/__init__.py
index 5a848b2..89279e9 100644
--- a/pytrustnfe/xml/__init__.py
+++ b/pytrustnfe/xml/__init__.py
@@ -58,7 +58,8 @@ def render_xml(path, template_name, remove_empty, **nfe):
 
 
 def sanitize_response(response):
-    response = re.sub('encoding="UTF-8"', '', response)
+    if 'encoding="utf-8"' in response or 'encoding="UTF-8"' in response:
+        response = re.sub('encoding="UTF-8"', '', response)
     tree = etree.fromstring(response)
     # Remove namespaces inuteis na resposta
     for elem in tree.getiterator():