diff --git a/spacy/tests/serialize/test_packer.py b/spacy/tests/serialize/test_packer.py
index 392cba8e3..1f78da974 100644
--- a/spacy/tests/serialize/test_packer.py
+++ b/spacy/tests/serialize/test_packer.py
@@ -24,7 +24,7 @@ from spacy.serialize.bits import BitArray
 def vocab():
     data_dir = os.environ.get('SPACY_DATA')
     if data_dir is None:
-        package = util.get_package_by_name()
+        package = util.get_package_by_name('en')
     else:
         package = util.get_package(data_dir)
 
diff --git a/spacy/tests/tagger/test_lemmatizer.py b/spacy/tests/tagger/test_lemmatizer.py
index af85645a6..aaf698fa3 100644
--- a/spacy/tests/tagger/test_lemmatizer.py
+++ b/spacy/tests/tagger/test_lemmatizer.py
@@ -14,7 +14,7 @@ import pytest
 def package():
     data_dir = os.environ.get('SPACY_DATA')
     if data_dir is None:
-        return util.get_package_by_name()
+        return util.get_package_by_name('en')
     else:
         return util.get_package(data_dir)