diff --git a/google-home/Cargo.toml b/google-home/Cargo.toml
index c47b3fe..e36e6b4 100644
--- a/google-home/Cargo.toml
+++ b/google-home/Cargo.toml
@@ -10,6 +10,6 @@ impl_cast = { path = "../impl_cast" }
 serde = { version = "1.0.149", features = ["derive"] }
 serde_json = "1.0.89"
 thiserror = "1.0.37"
-tokio = "1"
+tokio = { version = "1", features = ["sync"] }
 async-trait = "0.1.61"
 futures = "0.3.25"
diff --git a/google-home/src/device.rs b/google-home/src/device.rs
index 6829fa3..95655a9 100644
--- a/google-home/src/device.rs
+++ b/google-home/src/device.rs
@@ -80,7 +80,6 @@ pub trait GoogleHomeDevice: AsGoogleHomeDevice + Sync + Send + 'static {
         // OnOff
         if let Some(on_off) = As::<dyn OnOff>::cast(self) {
             traits.push(Trait::OnOff);
-            let on_off = on_off;
             device.attributes.command_only_on_off = on_off.is_command_only();
             device.attributes.query_only_on_off = on_off.is_query_only();
         }