diff --git a/spleeter/separator.py b/spleeter/separator.py
index 48d0b9d..c1c8f0e 100644
--- a/spleeter/separator.py
+++ b/spleeter/separator.py
@@ -121,7 +121,7 @@ class Separator(object):
             duration=duration,
             sample_rate=self._sample_rate)
         sources = self.separate(waveform)
-        filename = splitext(basename(audio_descriptor))
+        filename = splitext(basename(audio_descriptor))[0]
         generated = []
         for instrument, data in sources.items():
             path = join(destination, filename_format.format(
diff --git a/tests/test_separator.py b/tests/test_separator.py
index 43a1dda..9235731 100644
--- a/tests/test_separator.py
+++ b/tests/test_separator.py
@@ -9,7 +9,7 @@ __license__ = 'MIT License'
 
 import filecmp
 
-from os.path import splitext, exists, join
+from os.path import splitext, basename, exists, join
 from tempfile import TemporaryDirectory
 
 import pytest
@@ -19,7 +19,7 @@ from spleeter.audio.adapter import get_default_audio_adapter
 from spleeter.separator import Separator
 
 TEST_AUDIO_DESCRIPTOR = 'audio_example.mp3'
-TEST_AUDIO_BASENAME = splitext(TEST_AUDIO_DESCRIPTOR)
+TEST_AUDIO_BASENAME = splitext(basename(TEST_AUDIO_DESCRIPTOR))[0]
 TEST_CONFIGURATIONS = [
     ('spleeter:2stems', ('vocals', 'accompaniment')),
     ('spleeter:4stems', ('vocals', 'drums', 'bass', 'other')),