diff --git a/hal/audio_hw.c b/hal/audio_hw.c
index 51d34b0..868b562 100644
--- a/hal/audio_hw.c
+++ b/hal/audio_hw.c
@@ -4305,7 +4305,10 @@
     format = out->format = config->format;
     out->sample_rate = config->sample_rate;
     out->channel_mask = config->channel_mask;
-    out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO;
+    if (out->channel_mask == AUDIO_CHANNEL_NONE)
+        out->supported_channel_masks[0] = AUDIO_CHANNEL_OUT_STEREO;
+    else
+        out->supported_channel_masks[0] = out->channel_mask;
     out->handle = handle;
     out->bit_width = CODEC_BACKEND_DEFAULT_BIT_WIDTH;
     out->non_blocking = 0;