diff --git a/authlib/oauth2/rfc9068/introspection.py b/authlib/oauth2/rfc9068/introspection.py
index 05d00252..480b5aef 100644
--- a/authlib/oauth2/rfc9068/introspection.py
+++ b/authlib/oauth2/rfc9068/introspection.py
@@ -32,7 +32,6 @@ def get_username(self, user_id):
                 issuer="https://authorization-server.example.org",
             )
         )
-        authorization_server.register_endpoint(MyJWTAccessTokenIntrospectionEndpoint)
 
     '''