diff --git a/book/source/08-signing_components.md b/book/source/08-signing_components.md
index 350efdb..ca3a96d 100644
--- a/book/source/08-signing_components.md
+++ b/book/source/08-signing_components.md
@@ -308,12 +308,12 @@ Additionally, the expiration date can be altered for individual User IDs (detail
 
 To bind a User ID to an OpenPGP certificate, the signature should have the following structure:
 
-| Subpacket               | Area   | Critical       | Mandatory         | Notes                                 |
-|-------------------------|--------|----------------|-------------------|---------------------------------------|
-| Signature Creation Time | Hashed | True           | True              | Current time                          |
-| Issuer Fingerprint      | Hashed | True or False  | Strongly Recommended | Identifies the primary key as the issuer |
-| Primary User ID         | Hashed | True           | False             | Optional                              |
-| Signature Expiration Time | Hashed | True         | False             | Optional                              |
+| Subpacket               | Area   | Critical       | Mandatory         | Notes                                           |
+|-------------------------|--------|----------------|-------------------|-------------------------------------------------|
+| Signature Creation Time | Hashed | True           | True              | Current time                                    |
+| Issuer Fingerprint      | Hashed | True or False  | Strongly Recommended | The primary key is the issuer                  |
+| Primary User ID         | Hashed | True           | False             | Optional                                        |
+| Signature Expiration Time | Hashed | True         | False             | Optional                                        |
 
 
 In addition to these subpackets, self-certifications for User IDs can include others – such as key flags, features, and algorithm preferences – as shown in the previous table. This enables the specification of unique capabilities and preferences for each identity associated with the certificate.