diff --git a/libavformat/aiffenc.c b/libavformat/aiffenc.c
index 8cdb2616c2..ba5f607ff8 100644
--- a/libavformat/aiffenc.c
+++ b/libavformat/aiffenc.c
@@ -53,7 +53,6 @@ static int aiff_write_header(AVFormatContext *s)
     ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
 
     if (aifc) { // compressed audio
-        enc->bits_per_coded_sample = 16;
         if (!enc->block_align) {
             av_log(s, AV_LOG_ERROR, "block align not set\n");
             return -1;
diff --git a/tests/ref/acodec/adpcm-ima_qt b/tests/ref/acodec/adpcm-ima_qt
index 80015275fc..ace5325dc1 100644
--- a/tests/ref/acodec/adpcm-ima_qt
+++ b/tests/ref/acodec/adpcm-ima_qt
@@ -1,4 +1,4 @@
-23cbae1182e150ebf28e0abfb9cba127 *tests/data/fate/acodec-adpcm-ima_qt.aiff
+44691f14cf5bbef5005df27c692b93ab *tests/data/fate/acodec-adpcm-ima_qt.aiff
 281252 tests/data/fate/acodec-adpcm-ima_qt.aiff
 b0fafd002c38fb70acaddfda1a31ed61 *tests/data/fate/acodec-adpcm-ima_qt.out.wav
 stddev:  904.76 PSNR: 37.20 MAXDIFF:34029 bytes:  1058400/  1058560