diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8821282..7564f9b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -208,6 +208,7 @@ add_library(NintendoSDK OBJECT
   include/nn/atk/detail/SequenceSoundRuntime.h
   include/nn/atk/detail/SoundArchiveManager.h
   include/nn/atk/detail/AdvancedWaveSoundRuntime.h
+  include/nn/atk/AuxBus.h
   include/nn/atk/SoundArchivePlayer.h
   include/nn/atk/SoundPlayer.h
   include/nn/atk/SoundDataManager.h
diff --git a/include/nn/atk/AuxBus.h b/include/nn/atk/AuxBus.h
new file mode 100644
index 0000000..a954c4b
--- /dev/null
+++ b/include/nn/atk/AuxBus.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#include <nn/types.h>
+
+namespace nn {
+namespace atk {
+enum class AuxBus : s32 { AuxBus_A, AuxBus_B, AuxBus_C };
+}
+}  // namespace nn