diff --git a/book/source/glossary.md b/book/source/glossary.md
index a422284..f2812b9 100644
--- a/book/source/glossary.md
+++ b/book/source/glossary.md
@@ -128,7 +128,7 @@ Criticality Flag
     A flag on {term}`Subpacket`s, that can mark them as critical or non-critical, which is has an influence on signature validation. See [](criticality-of-subpackets).
 
 Cryptographic Key
-    A {term}`symmetric<Symmetric Cryptography>` or {term}`asymmetric<Asymmetric Cryptography>` cryptographic key is used for signing and encryption operations. See [](cryptography).
+    A {term}`symmetric<Symmetric Cryptography>` or {term}`asymmetric<Asymmetric Cryptography>` cryptographic key. See [](cryptography).
 
 Cryptographic Signature
     A raw cryptographic signature is an algorithm-specific sequence of bytes created by a {term}`Cryptographic Key`.