diff --git a/crates/bevy_ecs/src/system/system_param.rs b/crates/bevy_ecs/src/system/system_param.rs
index b475233f8c93e..c43f85055a6eb 100644
--- a/crates/bevy_ecs/src/system/system_param.rs
+++ b/crates/bevy_ecs/src/system/system_param.rs
@@ -1066,27 +1066,6 @@ unsafe impl SystemParam for &'_ World {
     }
 }
 
-/// SAFETY: `DeferredWorld` can read all components and resources but cannot be used to gain any other mutable references.
-unsafe impl<'w> SystemParam for DeferredWorld<'w> {
-    type State = ();
-    type Item<'world, 'state> = DeferredWorld<'world>;
-
-    fn init_state(_world: &mut World, system_meta: &mut SystemMeta) -> Self::State {
-        system_meta.component_access_set.read_all();
-        system_meta.component_access_set.write_all();
-        system_meta.set_has_deferred();
-    }
-
-    unsafe fn get_param<'world, 'state>(
-        _state: &'state mut Self::State,
-        _system_meta: &SystemMeta,
-        world: UnsafeWorldCell<'world>,
-        _change_tick: Tick,
-    ) -> Self::Item<'world, 'state> {
-        world.into_deferred()
-    }
-}
-
 /// A system local [`SystemParam`].
 ///
 /// A local may only be accessed by the system itself and is therefore not visible to other systems.
diff --git a/crates/bevy_input_focus/src/lib.rs b/crates/bevy_input_focus/src/lib.rs
index 0ec0b428978e9..424306d60180d 100644
--- a/crates/bevy_input_focus/src/lib.rs
+++ b/crates/bevy_input_focus/src/lib.rs
@@ -421,7 +421,7 @@ mod tests {
             .unwrap();
 
         app.world_mut()
-            .run_system_once(move |world: DeferredWorld| {
+            .run_system_once(move |world: &mut World| {
                 assert!(!world.is_focused(entity));
                 assert!(!world.is_focus_within(entity));
                 assert!(!world.is_focus_visible(entity));
@@ -541,7 +541,7 @@ mod tests {
             .unwrap();
 
         app.world_mut()
-            .run_system_once(move |world: DeferredWorld| {
+            .run_system_once(move |world: &mut World| {
                 assert!(!world.is_focused(entity_a));
                 assert!(!world.is_focus_within(entity_a));
                 assert!(!world.is_focus_visible(entity_a));