diff --git a/book/source/signing_data.md b/book/source/signing_data.md
index 7979400..6ae7953 100644
--- a/book/source/signing_data.md
+++ b/book/source/signing_data.md
@@ -56,7 +56,7 @@ This method is commonly used for signing or encrypting emails. Most email softwa
 
 There are two different constructions available to generate inline-signed messages:
 
-* {term}`One-pass-signed messages<One-pass-signed Message>` are signed using one ore more {term}`one-pass signatures<One-pass Signature Packet>` 
+* {term}`One-pass-signed messages<One-pass-signed Message>` are signed using one or more {term}`one-pass signatures<One-pass Signature Packet>` 
 * {term}`Prefixed-signed messages<Prefixed-signed Message>` have the actual signature(s) prefixed to the {term}`OpenPGP message<OpenPGP Message>`.
 
 A {term}`one-pass-signed<One-pass-signed Message>` {term}`OpenPGP message` consists of three segments: