diff --git a/document.py b/document.py
index bfd6e30..3445df8 100644
--- a/document.py
+++ b/document.py
@@ -65,7 +65,8 @@ class Incoming(metaclass=PoolMeta):
                 Defaults to False.
         """
         for document in documents:
-            document._facturx_detect_content()
+            if document.type == 'supplier_invoice':
+                document._facturx_detect_content()
         super().process(documents, with_children)
 
     def _process_supplier_invoice(self):
@@ -90,7 +91,6 @@ class Incoming(metaclass=PoolMeta):
                     invoice = self._readxml_update_invoice(invoice)
                     invoice.save()
                     self._readxml_check_invoice(invoice)
-        # raise ValueError('stop')
         return invoice
 
     def _readxml_check_invoice(self, invoice):