diff --git a/src/context.jsonld b/src/context.jsonld
index 6ffc880..46a6a86 100644
--- a/src/context.jsonld
+++ b/src/context.jsonld
@@ -4,5 +4,7 @@
         "object": "http://happy-dev.fr/owl/#object",
         "author": "http://happy-dev.fr/owl/#author",
         "account": "http://happy-dev.fr/owl/#account",
-        "jabberID": "foaf:jabberID"
+        "jabberID": "foaf:jabberID",
+        "firstName": "http://happy-dev.fr/owl/#first_name",
+        "lastName": "http://happy-dev.fr/owl/#last_name"
     }
diff --git a/src/header.pug b/src/header.pug
index b327da4..9edcdb0 100644
--- a/src/header.pug
+++ b/src/header.pug
@@ -18,7 +18,6 @@ details#user-controls
   summary(tabindex='0' role='button')
     sib-display#user-controls__profile(
       fields='firstName, account.picture'
-      extra-context='{firstName:"first_name"}'
       widget-account.picture='hd-user-avatar'
       bind-user
     )