diff --git a/src/add-ons/kernel/drivers/audio/hda/hda_multi_audio.cpp b/src/add-ons/kernel/drivers/audio/hda/hda_multi_audio.cpp
index 082bead032..b8b7393302 100644
--- a/src/add-ons/kernel/drivers/audio/hda/hda_multi_audio.cpp
+++ b/src/add-ons/kernel/drivers/audio/hda/hda_multi_audio.cpp
@@ -48,6 +48,7 @@ format2size(uint32 format)
 			return 2;
 
 		case B_FMT_18BIT:
+		case B_FMT_20BIT:
 		case B_FMT_24BIT:
 		case B_FMT_32BIT:
 		case B_FMT_FLOAT: