diff --git a/spacy/tests/spans/test_span.py b/spacy/tests/spans/test_span.py
index dbb835301..4050809b5 100644
--- a/spacy/tests/spans/test_span.py
+++ b/spacy/tests/spans/test_span.py
@@ -117,3 +117,9 @@ def test_span_to_array(doc):
     assert arr[0, 0] == span[0].orth
     assert arr[0, 1] == len(span[0])
 
+
+@pytest.mark.xfail
+def test_span_as_doc(doc):
+    span = doc[4:10]
+    span_doc = span.as_doc()
+    assert span.text == span_doc.text