diff --git a/tests/loader_tests.py b/tests/loader_tests.py
index f5e6b9d5..a53cf635 100644
--- a/tests/loader_tests.py
+++ b/tests/loader_tests.py
@@ -26,9 +26,7 @@ class TestLJSpeechDataset(unittest.TestCase):
             ref_level_db=c.ref_level_db,
             num_freq=c.num_freq,
             power=c.power,
-            preemphasis=c.preemphasis,
-            min_mel_freq=c.min_mel_freq,
-            max_mel_freq=c.max_mel_freq)
+            preemphasis=c.preemphasis)
 
     def test_loader(self):
         if ok_ljspeech:
@@ -169,9 +167,7 @@ class TestKusalDataset(unittest.TestCase):
             ref_level_db=c.ref_level_db,
             num_freq=c.num_freq,
             power=c.power,
-            preemphasis=c.preemphasis,
-            min_mel_freq=c.min_mel_freq,
-            max_mel_freq=c.max_mel_freq)
+            preemphasis=c.preemphasis)
 
     def test_loader(self):
         if ok_kusal: