diff --git a/server/src/main.rs b/server/src/main.rs
index 80bca2e..df67f5c 100644
--- a/server/src/main.rs
+++ b/server/src/main.rs
@@ -34,7 +34,7 @@ impl Relay for Handler {
         let mut in_stream = request.into_inner();
         let kb = self.kb.clone();
         let ms = self.ms.clone();
-        let (tx, rx) = tokio::sync::mpsc::channel(32);
+        let (tx, rx) = tokio::sync::mpsc::channel::<Result<HidReport, E>>(32);
 
         tokio::spawn(async move {
             // catch panics so that they are logged instead of killing the task silently