diff --git a/libavformat/aiffenc.c b/libavformat/aiffenc.c
index 8cdb261..78c5ae3 100644
--- a/libavformat/aiffenc.c
+++ b/libavformat/aiffenc.c
@@ -53,6 +53,9 @@ static int aiff_write_header(AVFormatContext *s)
     ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
 
     if (aifc) { // compressed audio
+    if (enc->codec_tag == MKTAG('r','a','w',' '))
+        enc->bits_per_coded_sample = 8;
+    else
         enc->bits_per_coded_sample = 16;
         if (!enc->block_align) {
             av_log(s, AV_LOG_ERROR, "block align not set\n");