diff --git a/book/source/04-certificates.md b/book/source/04-certificates.md
index 8b03e4e..4f45591 100644
--- a/book/source/04-certificates.md
+++ b/book/source/04-certificates.md
@@ -155,10 +155,6 @@ OpenPGP certificates can contain multiple [User IDs](https://www.ietf.org/archiv
 OpenPGP certificates can contain any number of User IDs
 ```
 
-```{admonition} Warning
-This image could be visually improved! The new image should have an alt tag
-```
-
 A typical User ID identity is a UTF-8-encoded string composed of a name and an email address. By convention, User IDs align with the format described in [RFC2822](https://www.rfc-editor.org/rfc/rfc2822) as a *name-addr*.
 
 For further conventions on User IDs, refer to the document [draft-dkg-openpgp-userid-conventions-00](https://datatracker.ietf.org/doc/draft-dkg-openpgp-userid-conventions/), dated 25 August 2023.