diff --git a/libmpcodecs/ad_pcm.c b/libmpcodecs/ad_pcm.c
index e3b3430fd5..4eded7a0d9 100644
--- a/libmpcodecs/ad_pcm.c
+++ b/libmpcodecs/ad_pcm.c
@@ -29,8 +29,9 @@ static int init(sh_audio_t *sh_audio)
     case 0x11: sh_audio->sample_format=AFMT_IMA_ADPCM;break;
     case 0x50: sh_audio->sample_format=AFMT_MPEG;break;
 /*    case 0x2000: sh_audio->sample_format=AFMT_AC3; */
-    case 0x736F7774: 
-       if(sh_audio->samplesize==1) sh_audio->sample_format=AFMT_S8; // 'twos'
+    case 0x736F7774: // 'twos'
+    case 0x74776F73: // 'swot'
+       if(sh_audio->samplesize==1) sh_audio->sample_format=AFMT_S8;
        break;
     default: if(sh_audio->samplesize!=2) sh_audio->sample_format=AFMT_U8;
   }