diff --git a/src/context_interface.rs b/src/context_interface.rs
index 0c5fd70..3ac43d3 100644
--- a/src/context_interface.rs
+++ b/src/context_interface.rs
@@ -18,7 +18,7 @@ pub trait ContextInterface: Send + Sync {
     fn height(&self) -> u32;
 
     #[cfg(feature = "audio")]
-    fn sound_handler(&self) -> &mut SoundHandler;
+    fn sound_handler(&self) -> std::sync::MutexGuard<'_, SoundHandler>;
 }
 
 pub enum TargetMode<T> {