diff --git a/libavcodec/msvideo1enc.c b/libavcodec/msvideo1enc.c
index aa3c26a62d..96fbea27de 100644
--- a/libavcodec/msvideo1enc.c
+++ b/libavcodec/msvideo1enc.c
@@ -276,6 +276,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
 
     avcodec_get_frame_defaults(&c->pic);
     avctx->coded_frame = (AVFrame*)&c->pic;
+    avctx->bits_per_coded_sample = 16;
 
     c->keyint = avctx->keyint_min;
     av_lfg_init(&c->rnd, 1);
diff --git a/tests/ref/vsynth1/msvideo1 b/tests/ref/vsynth1/msvideo1
index 7978258c99..2dc529ba03 100644
--- a/tests/ref/vsynth1/msvideo1
+++ b/tests/ref/vsynth1/msvideo1
@@ -1,4 +1,4 @@
-267a152a73cbc5ac4694a6e3b254be34 *./tests/data/vsynth1/msvideo1.avi
+37aa67b5928794534cb6a268d4adf48c *./tests/data/vsynth1/msvideo1.avi
 2162264 ./tests/data/vsynth1/msvideo1.avi
 c0665fac1bd896b6fe7fe0eead805bd5 *./tests/data/msvideo1.vsynth1.out.yuv
 stddev:   11.80 PSNR: 26.69 MAXDIFF:  151 bytes:  7603200/  7603200
diff --git a/tests/ref/vsynth2/msvideo1 b/tests/ref/vsynth2/msvideo1
index f71be35278..9c049e7c10 100644
--- a/tests/ref/vsynth2/msvideo1
+++ b/tests/ref/vsynth2/msvideo1
@@ -1,4 +1,4 @@
-5dddbbd6616d9be4bc0fd0c9650bd9e3 *./tests/data/vsynth2/msvideo1.avi
+e70658b8b97eb4c7e63b2081c3a602de *./tests/data/vsynth2/msvideo1.avi
 1259308 ./tests/data/vsynth2/msvideo1.avi
 cd83ffcbc73573044e3aead3094229e5 *./tests/data/msvideo1.vsynth2.out.yuv
 stddev:    7.42 PSNR: 30.72 MAXDIFF:  123 bytes:  7603200/  7603200