diff --git a/doc/makepkg.conf.5.asciidoc b/doc/makepkg.conf.5.asciidoc
index 9292b2a6..178a1f1c 100644
--- a/doc/makepkg.conf.5.asciidoc
+++ b/doc/makepkg.conf.5.asciidoc
@@ -244,6 +244,7 @@ Options
 
 **PACKAGER=**"John Doe <john@example.com>"::
 	This value is used when querying a package to see who was the builder.
+	The given format is required for PGP key lookup through WKD.
 	It is recommended to change this to your name and email address.
 
 **COMPRESSGZ=**"(gzip -c -f -n)"::