diff --git a/test/py/tests/test_fs/conftest.py b/test/py/tests/test_fs/conftest.py
index 0205048e73a..cc5c0fc3756 100644
--- a/test/py/tests/test_fs/conftest.py
+++ b/test/py/tests/test_fs/conftest.py
@@ -706,7 +706,7 @@ def fs_obj_fat(request, u_boot_config):
 
     try:
         # the volume size depends on the filesystem
-        fs_img = fs_helper.mk_fs(u_boot_config, fs_type, fs_size, f'{fs_size}', None, 1024)
+        fs_img = fs_helper.mk_fs(u_boot_config, fs_type, fs_size, f'{fs_size}')
     except:
         pytest.skip('Setup failed for filesystem: ' + fs_type)
         return