From 9df63ba00aead94667ff7fd37bfd4adf88711952 Mon Sep 17 00:00:00 2001
From: Paul Schaub <vanitasvitae@fsfe.org>
Date: Thu, 21 Dec 2023 15:26:34 +0100
Subject: [PATCH] s/A/An

---
 book/source/glossary.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/book/source/glossary.md b/book/source/glossary.md
index 7ba86b8..5994e9e 100644
--- a/book/source/glossary.md
+++ b/book/source/glossary.md
@@ -183,7 +183,7 @@ Expiration Time
     The time of expiry of an {term}`OpenPGP Signature Packet`.
 
 Features Subpacket
-    A {term}`OpenPGP Signature Subpacket`, which denotes advanced OpenPGP features an {term}`implementation<OpenPGP Implementation>` supports.
+    An {term}`OpenPGP Signature Subpacket`, which denotes advanced OpenPGP features an {term}`implementation<OpenPGP Implementation>` supports.
 
     For an in-depth view on these {term}`subpackets<OpenPGP Signature Subpacket>` see [](zoom-dks).