diff --git a/tonic-macros/src/service.rs b/tonic-macros/src/service.rs
index fa108a1..1fb9ede 100644
--- a/tonic-macros/src/service.rs
+++ b/tonic-macros/src/service.rs
@@ -216,6 +216,7 @@ fn generate_unary(
             Ok(res)
         };
 
+        // TODO: implement this future manually
         Box::pin(fut)
     }
 }
diff --git a/tonic/src/transport/service/connect.rs b/tonic/src/transport/service/connect.rs
index ca160c5..e39b8e0 100644
--- a/tonic/src/transport/service/connect.rs
+++ b/tonic/src/transport/service/connect.rs
@@ -43,6 +43,7 @@ impl Service<Request<BoxBody>> for Connection {
 
     fn call(&mut self, req: Request<BoxBody>) -> Self::Future {
         let fut = self.inner.call(req);
+        // TODO: we dont need to box here if we have too
         Box::pin(fut)
     }
 }