diff --git a/spacy/tests/serialize/test_serialize_kb.py b/spacy/tests/serialize/test_serialize_kb.py
index 7a8022890..bcf27990b 100644
--- a/spacy/tests/serialize/test_serialize_kb.py
+++ b/spacy/tests/serialize/test_serialize_kb.py
@@ -1,5 +1,4 @@
-import spacy
-from spacy.lang.en import English
+# coding: utf-8
 from ..util import make_tempdir
 from ...util import ensure_path