diff --git a/agb/src/sound/mixer/mod.rs b/agb/src/sound/mixer/mod.rs
index 2310ff7e..c5441795 100644
--- a/agb/src/sound/mixer/mod.rs
+++ b/agb/src/sound/mixer/mod.rs
@@ -1,6 +1,7 @@
 mod hw;
 mod sw_mixer;
 
+pub use sw_mixer::ChannelId;
 pub use sw_mixer::Mixer;
 
 use crate::number::Num;