diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c
index 18eaebc6ad..19f0b289e5 100644
--- a/libavcodec/smacker.c
+++ b/libavcodec/smacker.c
@@ -555,6 +555,7 @@ static av_cold int decode_end(AVCodecContext *avctx)
 static av_cold int smka_decode_init(AVCodecContext *avctx)
 {
     avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
+    avctx->sample_fmt = avctx->bits_per_coded_sample == 8 ? SAMPLE_FMT_U8 : SAMPLE_FMT_S16;
     return 0;
 }
 
diff --git a/libavformat/smacker.c b/libavformat/smacker.c
index 7d0a8d59d4..8ec28bcd3b 100644
--- a/libavformat/smacker.c
+++ b/libavformat/smacker.c
@@ -183,7 +183,6 @@ static int smacker_read_header(AVFormatContext *s, AVFormatParameters *ap)
             ast[i]->codec->bits_per_coded_sample = (smk->rates[i] & SMK_AUD_16BITS) ? 16 : 8;
             if(ast[i]->codec->bits_per_coded_sample == 16 && ast[i]->codec->codec_id == CODEC_ID_PCM_U8)
                 ast[i]->codec->codec_id = CODEC_ID_PCM_S16LE;
-            ast[i]->codec->sample_fmt = ast[i]->codec->bits_per_coded_sample == 8 ? SAMPLE_FMT_U8 : SAMPLE_FMT_S16;
             av_set_pts_info(ast[i], 64, 1, ast[i]->codec->sample_rate
                     * ast[i]->codec->channels * ast[i]->codec->bits_per_coded_sample / 8);
         }