diff --git a/src/asteroids.rs b/src/asteroids.rs
index 9da08e1..6285920 100644
--- a/src/asteroids.rs
+++ b/src/asteroids.rs
@@ -8,8 +8,7 @@ use std::time::Duration;
 use bevy::prelude::*;
 
 use crate::{
-    GameAssets, Lifetime, WorldSize, config::ASTEROID_LIFETIME, events::AsteroidDestroy,
-    physics::Velocity,
+    config::ASTEROID_LIFETIME, events::{AsteroidDestroy, SpawnAsteroid}, physics::Velocity, GameAssets, Lifetime, WorldSize
 };
 
 #[derive(Component, Deref, DerefMut)]
@@ -51,13 +50,6 @@ impl AsteroidSpawner {
     }
 }
 
-#[derive(Event)]
-pub struct SpawnAsteroid {
-    pos: Vec2,
-    vel: Vec2,
-    size: AsteroidSize,
-}
-
 /// Update the asteroid spawn timer and spawn any asteroids
 /// that are due this frame.
 pub fn tick_asteroid_manager(
diff --git a/src/events.rs b/src/events.rs
index 7810c6f..1369740 100644
--- a/src/events.rs
+++ b/src/events.rs
@@ -1,5 +1,7 @@
 use bevy::prelude::*;
 
+use crate::asteroids::AsteroidSize;
+
 /// Signals that the player's ship has been destroyed.
 /// Used when the player collides with an asteroid.
 #[derive(Event)]
@@ -10,6 +12,13 @@ pub(crate) struct ShipDestroy;
 #[derive(Event)]
 pub(crate) struct AsteroidDestroy(pub Entity);
 
+#[derive(Event)]
+pub struct SpawnAsteroid {
+    pub pos: Vec2,
+    pub vel: Vec2,
+    pub size: AsteroidSize,
+}
+
 // TODO: BulletDestroy
 // Which depends on the still-pending Bullet component creation.
 
diff --git a/src/lib.rs b/src/lib.rs
index 46c788d..3c65614 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -73,7 +73,7 @@ impl Plugin for AsteroidPlugin {
             )
                 .run_if(in_state(GameState::Playing)),
         )
-        .add_event::<asteroids::SpawnAsteroid>()
+        .add_event::<events::SpawnAsteroid>()
         .add_event::<events::AsteroidDestroy>()
         .add_event::<events::ShipDestroy>()
         .add_event::<events::BulletDestroy>();