diff --git a/examples/egui.rs b/examples/egui.rs
index 3e75748..429a187 100644
--- a/examples/egui.rs
+++ b/examples/egui.rs
@@ -186,7 +186,7 @@ impl PianoRoll {
     }
 
     fn update_key_states(&mut self, ui: &mut Ui) {
-        let input = ui.input(|i| i.key_pressed(egui::Key::A));
+        let _input = ui.input(|i| i.key_pressed(egui::Key::A));
         let next_keys = std::array::from_fn(|index| ui.input(|i| i.key_down(KEYS[index])));
 
         self.key_states
diff --git a/examples/piano.rs b/examples/piano.rs
index b6bc6b7..84c8dc0 100644
--- a/examples/piano.rs
+++ b/examples/piano.rs
@@ -146,7 +146,7 @@ fn handle_midi_input(
     mut midi_events: EventReader<MidiData>,
     query: Query<(Entity, &Key)>,
 ) {
-    for data in midi_events.iter() {
+    for data in midi_events.read() {
         let [_, index, _value] = data.message.msg;
         let off = index % 12;
         let oct = index.overflowing_div(12).0;