diff --git a/rtic-sync/src/signal.rs b/rtic-sync/src/signal.rs
index 0a26b4c623..017be8a353 100644
--- a/rtic-sync/src/signal.rs
+++ b/rtic-sync/src/signal.rs
@@ -12,6 +12,7 @@ enum Store<T> {
 }
 
 /// A "latest only" value store with unlimited writers and async waiting.
+#[derive(Default)]
 pub struct Signal<T: Copy> {
     waker: CriticalSectionWakerRegistration,
     store: UnsafeCell<Store<T>>,