Terminology fix: .gz and .bz2 are not archive formats.
diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
index aab9ec7..4fd44ee 100644
--- a/Doc/library/zlib.rst
+++ b/Doc/library/zlib.rst
@@ -19,7 +19,7 @@
information.
For reading and writing ``.gz`` files see the :mod:`gzip` module. For
-other archive formats, see the :mod:`bz2`, :mod:`zipfile`, and
+other related file formats, see the :mod:`bz2`, :mod:`zipfile`, and
:mod:`tarfile` modules.
The available exception and functions in this module are: