diff --git a/facho/fe/fe.py b/facho/fe/fe.py
index f1c6fb5..19a1e5e 100644
--- a/facho/fe/fe.py
+++ b/facho/fe/fe.py
@@ -46,7 +46,13 @@ class FeXML(FachoXML):
         self._cn = root.rstrip('/')
         #self.find_or_create_element(self._cn)
 
+    # MACHETE se elimina xml namespace fe
+    def tostring(self, **kw):
+        return super().tostring(**kw)\
+            .replace("fe:", "")\
+            .replace("xmlns:fe", "xmlns")
 
+    
 class DianXMLExtensionCUFE(FachoXMLExtension):
     AMBIENTE_PRUEBAS = codelist.TipoAmbiente.by_name('Pruebas')['code']
     AMBIENTE_PRODUCCION = codelist.TipoAmbiente.by_name('Producción')['code']
diff --git a/facho/fe/form.py b/facho/fe/form.py
index 9a1d6fc..adf9dcc 100644
--- a/facho/fe/form.py
+++ b/facho/fe/form.py
@@ -298,8 +298,7 @@ class DIANInvoiceXML(fe.FeXML):
     def __init__(self, invoice):
         super().__init__('Invoice', 'http://www.dian.gov.co/contratos/facturaelectronica/v1')
         self.attach_invoice(invoice)
-
-
+    
     def set_supplier(fexml, invoice):
         fexml.set_element('/fe:Invoice/cac:AccountingSupplierParty/cbc:AdditionalAccountID',
                           invoice.invoice_supplier.organization_code)
diff --git a/tests/test_fe.py b/tests/test_fe.py
index 41e7061..9318134 100644
--- a/tests/test_fe.py
+++ b/tests/test_fe.py
@@ -87,6 +87,11 @@ def test_dian_extension_authorization_provider():
     dian_nit = xml.get_element_text('/fe:Invoice/ext:UBLExtensions/ext:UBLExtension/ext:ExtensionContent/sts:DianExtensions/sts:AuthorizationProvider/sts:AuthorizationProviderID')
     assert dian_nit == '800197268'
 
+def test_dian_invoice_with_fe():
+    xml = fe.FeXML('Invoice',
+                   'http://www.dian.gov.co/contratos/facturaelectronica/v1')
+    
+    assert "<Invoice" in xml.tostring()