diff --git a/libavcodec/flacdec.c b/libavcodec/flacdec.c
index c9dbc14726..a48b177828 100644
--- a/libavcodec/flacdec.c
+++ b/libavcodec/flacdec.c
@@ -473,10 +473,10 @@ static int decode_frame(FLACContext *s)
         ret = allocate_buffers(s);
         if (ret < 0)
             return ret;
-        ff_flacdsp_init(&s->dsp, s->avctx->sample_fmt, s->bps);
         s->got_streaminfo = 1;
         dump_headers(s->avctx, (FLACStreaminfo *)s);
     }
+    ff_flacdsp_init(&s->dsp, s->avctx->sample_fmt, s->bps);
 
 //    dump_headers(s->avctx, (FLACStreaminfo *)s);