diff --git a/src/utils/isocheck.py b/src/utils/isocheck.py
index 093a7516d62e2dcb07f9cf29a88e469f7c5bd9f9..2310daf25c08675cd177d30fe8a985f51427a12b 100644
--- a/src/utils/isocheck.py
+++ b/src/utils/isocheck.py
@@ -47,7 +47,7 @@ class IsoCheck(object):
                 'repodata',
             ]
             found_dirs = set()
-            for dirpath, dirnames, filenames in iso.walk(iso_path='/'):
+            for dirpath in iso.walk(iso_path='/'):
                 dirname = dirpath.strip('/').lower()
                 if dirname in os_dirs:
                     found_dirs.add(dirname)