diff --git a/book/source/glossary.md b/book/source/glossary.md
index fe3f25a..577b19b 100644
--- a/book/source/glossary.md
+++ b/book/source/glossary.md
@@ -23,7 +23,7 @@ Asymmetric Cryptography
     Asymmetric cryptography (also known as public-key cryptography) is used in OpenPGP to send messages without using a prior shared secret. For a more detailed discussion see [](public-key-cryptography).
 
 Authenticated Encryption With Associated Data
-    Short AEAD, refers to an encryption scheme that ensures confidentiality of a message. Additionally, additional data, which is not confidential, may be associated with the message.
+    Short AEAD, refers to an encryption scheme that ensures confidentiality of a message. Additionally, additional data, which is not confidential, may be associated with the message, ensuring integrity of both the confidential part of the message, as well as the additional data.
 
     See Wikipedia on [Authenticated Encryption](https://en.wikipedia.org/wiki/Authenticated_encryption).