diff --git a/shared-bindings/audiocore/__init__.c b/shared-bindings/audiocore/__init__.c
index c9d5a1cabf..cf05112cb7 100644
--- a/shared-bindings/audiocore/__init__.c
+++ b/shared-bindings/audiocore/__init__.c
@@ -55,7 +55,6 @@
 
 STATIC const mp_rom_map_elem_t audiocore_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_audiocore) },
-    //{ MP_ROM_QSTR(MP_QSTR_Mixer), MP_ROM_PTR(&audioio_mixer_type) },
     { MP_ROM_QSTR(MP_QSTR_RawSample), MP_ROM_PTR(&audioio_rawsample_type) },
     { MP_ROM_QSTR(MP_QSTR_WaveFile), MP_ROM_PTR(&audioio_wavefile_type) },
 };
diff --git a/shared-bindings/audioio/__init__.c b/shared-bindings/audioio/__init__.c
index ea81786d63..7fa37d5c51 100644
--- a/shared-bindings/audioio/__init__.c
+++ b/shared-bindings/audioio/__init__.c
@@ -74,8 +74,10 @@
 STATIC const mp_rom_map_elem_t audioio_module_globals_table[] = {
     { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_audioio) },
     { MP_ROM_QSTR(MP_QSTR_AudioOut), MP_ROM_PTR(&audioio_audioout_type) },
-#ifdef CIRCUITPY_AUDIOIO_COMPAT
-    //{ MP_ROM_QSTR(MP_QSTR_Mixer), MP_ROM_PTR(&audiomixer_mixer_type) },
+#if CIRCUITPY_AUDIOIO_COMPAT
+    #if CIRCUITPY_AUDIOMIXER
+    { MP_ROM_QSTR(MP_QSTR_Mixer), MP_ROM_PTR(&audiomixer_mixer_type) },
+    #endif
     { MP_ROM_QSTR(MP_QSTR_RawSample), MP_ROM_PTR(&audioio_rawsample_type) },
     { MP_ROM_QSTR(MP_QSTR_WaveFile), MP_ROM_PTR(&audioio_wavefile_type) },
 #endif