diff --git a/src/default/mod.rs b/src/default/mod.rs
index 9c56660..46ccc01 100644
--- a/src/default/mod.rs
+++ b/src/default/mod.rs
@@ -54,15 +54,8 @@ impl DefaultUiState {
     }
 }
 
-pub trait HasAppEvent {
-    type Event: 'static;
-}
-
-impl<T> HasAppEvent for T {
+pub trait HasDefaultUiState: Sized + 'static {
     type Event = ();
-}
-
-pub trait HasDefaultUiState: Sized + 'static + HasAppEvent {
     fn default_state(&self) -> &DefaultUiState;
     fn default_state_mut(&mut self) -> &mut DefaultUiState;
 }