diff --git a/src/audio_output/common.c b/src/audio_output/common.c
index 2fda66e132623929758a9fa01195931aa5cb644d..6dd6e9ed51d23572e9ba1db0ee3e5e4b6062903a 100644
--- a/src/audio_output/common.c
+++ b/src/audio_output/common.c
@@ -239,6 +239,8 @@ unsigned int aout_BitsPerSample( vlc_fourcc_t i_format )
     {
     case VLC_CODEC_U8:
     case VLC_CODEC_S8:
+    case VLC_CODEC_ALAW:
+    case VLC_CODEC_MULAW:
         return 8;
 
     case VLC_CODEC_U16L: