diff --git a/tests/test_ctokenizer.py b/tests/test_ctokenizer.py
index f21378c..7a082e8 100644
--- a/tests/test_ctokenizer.py
+++ b/tests/test_ctokenizer.py
@@ -28,7 +28,7 @@ try:
 except ImportError:
     CTokenizer = None
 
-from _test_tokenizer import TokenizerTestCase
+from ._test_tokenizer import TokenizerTestCase
 
 @unittest.skipUnless(CTokenizer, "C tokenizer not available")
 class TestCTokenizer(TokenizerTestCase, unittest.TestCase):
diff --git a/tests/test_pytokenizer.py b/tests/test_pytokenizer.py
index 3e598bf..697c7e5 100644
--- a/tests/test_pytokenizer.py
+++ b/tests/test_pytokenizer.py
@@ -25,7 +25,7 @@ import unittest
 
 from mwparserfromhell.parser.tokenizer import Tokenizer
 
-from _test_tokenizer import TokenizerTestCase
+from ._test_tokenizer import TokenizerTestCase
 
 class TestPyTokenizer(TokenizerTestCase, unittest.TestCase):
     """Test cases for the Python tokenizer."""