diff --git a/libavformat/pp_bnk.c b/libavformat/pp_bnk.c
index dfe5343cde..821d14a4aa 100644
--- a/libavformat/pp_bnk.c
+++ b/libavformat/pp_bnk.c
@@ -214,7 +214,6 @@ static int pp_bnk_read_header(AVFormatContext *s)
 
         par->sample_rate            = hdr.sample_rate;
         par->bits_per_coded_sample  = 4;
-        par->bits_per_raw_sample    = 16;
         par->block_align            = 1;
         par->bit_rate               = par->sample_rate * (int64_t)par->bits_per_coded_sample * par->channels;