diff --git a/book/source/05-private.md b/book/source/05-private.md
index 6251790..ddc3a05 100644
--- a/book/source/05-private.md
+++ b/book/source/05-private.md
@@ -6,9 +6,9 @@ SPDX-License-Identifier: CC-BY-SA-4.0
 (private_key_chapter)=
 # Private key material in OpenPGP
 
-This chapter discusses the handling of private key material in OpenPGP.
+This chapter discusses the handling of private key material within OpenPGP.
 
-Private key material is associated with component keys that are parts of [OpenPGP certificates](certificates_chapter). For a discussion of packet structure internals, see the chapter {ref}`zoom_private`
+Private key material is associated with component keys, which are integral parts of [OpenPGP certificates](certificates_chapter). For a discussion of packet structure internals, see the chapter {ref}`zoom_private`.
 
 ## Terminology: "Certificates" and "private keys"