diff --git a/spacy/tests/serialize/test_serialize_language.py b/spacy/tests/serialize/test_serialize_language.py
index 1fcf8ef18..9b6a011c9 100644
--- a/spacy/tests/serialize/test_serialize_language.py
+++ b/spacy/tests/serialize/test_serialize_language.py
@@ -17,6 +17,7 @@ def meta_data():
         'email': 'email-in-fixture',
         'url': 'url-in-fixture',
         'license': 'license-in-fixture',
+        'vectors': {'width': 0, 'vectors': 0, 'keys': 0, 'name': None}
     }