diff --git a/endpoint/src/auth.rs b/endpoint/src/auth.rs
index c9fa7c4..03ad8ae 100644
--- a/endpoint/src/auth.rs
+++ b/endpoint/src/auth.rs
@@ -73,6 +73,7 @@ pub struct OAuth2TokenReply {
 
 #[derive(rocket::form::FromForm)]
 pub struct OAuth2ClientCredentialsBody<'r> {
+    #[allow(dead_code)]
     pub grant_type: &'r str,
     pub scope: Option<&'r str>,
 }