diff --git a/Doc/glossary.rst b/Doc/glossary.rst
index b03ef1f06ff7cd..ea62fccdc3d265 100644
--- a/Doc/glossary.rst
+++ b/Doc/glossary.rst
@@ -102,7 +102,7 @@ Glossary
       statements.
 
    asynchronous generator iterator
-      An object created by a :term:`asynchronous generator` function.
+      An object created by an :term:`asynchronous generator` function.
 
       This is an :term:`asynchronous iterator` which when called using the
       :meth:`~object.__anext__` method returns an awaitable object which will execute