diff --git a/python/pyarrow/tests/test_fs.py b/python/pyarrow/tests/test_fs.py
index 5bf1950c0654..e5caa1c88ddf 100644
--- a/python/pyarrow/tests/test_fs.py
+++ b/python/pyarrow/tests/test_fs.py
@@ -803,7 +803,7 @@ def test_get_file_info_with_selector(fs, pathfn):
         infos = fs.get_file_info(selector)
         if fs.type_name == "py::fsspec+('s3', 's3a')":
             # s3fs only lists directories if they are not empty
-            len(infos) == 4
+            assert len(infos) == 4
         else:
             assert len(infos) == 5