diff --git a/python/pmtiles/reader.py b/python/pmtiles/reader.py
index 561bf9a..86144a2 100644
--- a/python/pmtiles/reader.py
+++ b/python/pmtiles/reader.py
@@ -46,7 +46,7 @@ class Reader:
         header = deserialize_header(self.get_bytes(0, 127))
         dir_offset = header["root_offset"]
         dir_length = header["root_length"]
-        for depth in range(0, 3):  # max depth
+        for depth in range(0, 4):  # max depth
             directory = deserialize_directory(self.get_bytes(dir_offset, dir_length))
             result = find_tile(directory, tile_id)
             if result:
diff --git a/python/pmtiles/writer.py b/python/pmtiles/writer.py
index 2b69814..f365d47 100644
--- a/python/pmtiles/writer.py
+++ b/python/pmtiles/writer.py
@@ -107,9 +107,6 @@ class Writer:
         compressed_metadata = gzip.compress(json.dumps(metadata).encode())
         header["clustered"] = True
         header["internal_compression"] = Compression.GZIP
-        header[
-            "tile_compression"
-        ] = Compression.GZIP  # TODO: not necessarily true for non-vector
         header["root_offset"] = 127
         header["root_length"] = len(root_bytes)
         header["metadata_offset"] = header["root_offset"] + header["root_length"]