diff --git a/styles/config/vocabularies/default/accept.txt b/styles/config/vocabularies/default/accept.txt
index caeb9318d..0b78e7360 100644
--- a/styles/config/vocabularies/default/accept.txt
+++ b/styles/config/vocabularies/default/accept.txt
@@ -101,6 +101,7 @@ Gumroad
 Hetzner
 Homeserver
 [Hh]ostname
+howto
 HubSpot
 Humantic
 Imperva