diff --git a/event/event.go b/event/event.go
index d2a4820..2c2538f 100644
--- a/event/event.go
+++ b/event/event.go
@@ -55,7 +55,9 @@ func (cookie cookie[L]) Close () {
 }
 
 // FuncBroadcaster is a broadcaster that manages functions with no arguments.
-type FuncBroadcaster Broadcaster[func ()]
+type FuncBroadcaster struct {
+	Broadcaster[func ()]
+}
 
 // Broadcast calls all connected listener funcs.
 func (broadcaster *FuncBroadcaster) Broadcast () {