diff --git a/libavcodec/snow.c b/libavcodec/snow.c
index b355920553..f96d9343a7 100644
--- a/libavcodec/snow.c
+++ b/libavcodec/snow.c
@@ -31,7 +31,7 @@
 #define MAX_DECOMPOSITIONS 8
 #define MAX_PLANES 4
 #define DWTELEM int
-#define QSHIFT 3
+#define QSHIFT 5
 #define QROOT (1<<QSHIFT)
 #define LOSSLESS_QLOG -128
 #define FRAC_BITS 8
diff --git a/tests/ffmpeg.regression.ref b/tests/ffmpeg.regression.ref
index c5517d6b8a..98c7f4eb89 100644
--- a/tests/ffmpeg.regression.ref
+++ b/tests/ffmpeg.regression.ref
@@ -119,12 +119,12 @@ a7ef4746f27be309138c188e327d3ebe *./data/a-ffv1.avi
 2653642 ./data/a-ffv1.avi
 799d3db687f6cdd7a837ec156efc171f *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
-3e7738ae0429e48d3465d4f941eb7448 *./data/a-snow.avi
-1280602 ./data/a-snow.avi
-e4b8c83278efee032a84569c25593937 *./data/out.yuv
-stddev:  2.92 PSNR:38.79 bytes:7602176
-45687368463932f08dbc74c973ad32dd *./data/a-snow53.avi
-3537042 ./data/a-snow53.avi
+15527997420c2ace9ab26e4504f7ca8d *./data/a-snow.avi
+1269510 ./data/a-snow.avi
+20e858677a35136bfa0765fafd3f9385 *./data/out.yuv
+stddev:  2.96 PSNR:38.67 bytes:7602176
+28b6a82fdd8058e2df35778c9a5edbbf *./data/a-snow53.avi
+3537074 ./data/a-snow53.avi
 799d3db687f6cdd7a837ec156efc171f *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
 b5b6275f58f012de73644bbaa9080097 *./data/a-svq1.mov
diff --git a/tests/rotozoom.regression.ref b/tests/rotozoom.regression.ref
index 352eb9a8ac..2debc64a14 100644
--- a/tests/rotozoom.regression.ref
+++ b/tests/rotozoom.regression.ref
@@ -119,12 +119,12 @@ d0831a8339491fd680b650f05262e5d9 *./data/a-ffv1.avi
 3524768 ./data/a-ffv1.avi
 dde5895817ad9d219f79a52d0bdfb001 *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
-6e0ea3a5128f54f42e5fdb81532d95fe *./data/a-snow.avi
-332700 ./data/a-snow.avi
-1f3439e1b3ff09492f196a024d7119e3 *./data/out.yuv
-stddev:  2.37 PSNR:40.60 bytes:7602176
-92ab639886be86087942dd76cfd91bf3 *./data/a-snow53.avi
-2724572 ./data/a-snow53.avi
+7b3468914d99ff2803c35560a0a4a6f0 *./data/a-snow.avi
+327494 ./data/a-snow.avi
+3c1e7765d9be2af73e992c2f6d769e7b *./data/out.yuv
+stddev:  2.40 PSNR:40.52 bytes:7602176
+8b510a8e4a26d6d469bd80b46922d5e6 *./data/a-snow53.avi
+2724602 ./data/a-snow53.avi
 dde5895817ad9d219f79a52d0bdfb001 *./data/out.yuv
 stddev:  0.00 PSNR:99.99 bytes:7602176
 920c610ec324b772d882b0717e375943 *./data/a-svq1.mov