diff --git a/picard/ui/infodialog.py b/picard/ui/infodialog.py
index 52296dce6..74e5d7e84 100644
--- a/picard/ui/infodialog.py
+++ b/picard/ui/infodialog.py
@@ -33,7 +33,6 @@ from collections import (
     namedtuple,
 )
 from html import escape
-import os.path
 import re
 import traceback
 
diff --git a/test/formats/test_wav.py b/test/formats/test_wav.py
index 5432cbf78..9355f0ce1 100644
--- a/test/formats/test_wav.py
+++ b/test/formats/test_wav.py
@@ -41,7 +41,6 @@ expected_info = {
     '~channels': '2',
     '~sample_rate': '44100',
     '~bits_per_sample': '16',
-    '~filesize': '15706',
 }
 
 if WAVFile.supports_tag('artist'):