diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index b031e24981..87ec91d6e8 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -1400,16 +1400,16 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
 
                 for (n = nb_samples / 2; n > 0; n--) {
                     int v = bytestream2_get_byteu(&gb);
-                    *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4  , 3);
                     *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
+                    *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4  , 3);
                 }
             }
         } else {
             for (n = nb_samples / 2; n > 0; n--) {
                 for (channel = 0; channel < avctx->channels; channel++) {
                     int v = bytestream2_get_byteu(&gb);
-                    *samples++  = adpcm_ima_expand_nibble(&c->status[channel], v >> 4  , 3);
-                    samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
+                    *samples++  = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
+                    samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v >> 4  , 3);
                 }
                 samples += avctx->channels;
             }
diff --git a/tests/ref/fate/adpcm-ima-ws b/tests/ref/fate/adpcm-ima-ws
index d1e6b615dc..b382812d22 100644
--- a/tests/ref/fate/adpcm-ima-ws
+++ b/tests/ref/fate/adpcm-ima-ws
@@ -4,43 +4,43 @@
 #sample_rate 0: 22050
 #channel_layout 0: 4
 #channel_layout_name 0: mono
-0,          0,          0,    11024,    22048, 0x0665d7f4
-0,      11024,      11024,     1470,     2940, 0x0f3c64cb
-0,      12494,      12494,     1470,     2940, 0xc90b9e78
-0,      13964,      13964,     1470,     2940, 0x146246a3
-0,      15434,      15434,     1470,     2940, 0xd22c714e
-0,      16904,      16904,     1470,     2940, 0xd86b681e
-0,      18374,      18374,     1470,     2940, 0x12ec8186
-0,      19844,      19844,     1470,     2940, 0x69aa85b6
-0,      21314,      21314,     1470,     2940, 0xb24d33b0
-0,      22784,      22784,     1470,     2940, 0x3f7b0f0d
-0,      24254,      24254,     1470,     2940, 0x64f10f7e
-0,      25724,      25724,     1470,     2940, 0xd6ea379a
-0,      27194,      27194,     1470,     2940, 0x7c38e830
-0,      28664,      28664,     1470,     2940, 0xc28ff132
-0,      30134,      30134,     1470,     2940, 0xe7b11629
-0,      31604,      31604,     1470,     2940, 0xeb86fdcb
-0,      33074,      33074,     1470,     2940, 0x5508f586
-0,      34544,      34544,     1470,     2940, 0xf4fa1f1b
-0,      36014,      36014,     1470,     2940, 0x9e5ff976
-0,      37484,      37484,     1470,     2940, 0xcfc4e08f
-0,      38954,      38954,     1470,     2940, 0x74bde7ed
-0,      40424,      40424,     1470,     2940, 0x3e4ae245
-0,      41894,      41894,     1470,     2940, 0x4c6a8e56
-0,      43364,      43364,     1470,     2940, 0xa09d86ab
-0,      44834,      44834,     1470,     2940, 0xc8531912
-0,      46304,      46304,     1470,     2940, 0xa5f266aa
-0,      47774,      47774,     1470,     2940, 0x587a4187
-0,      49244,      49244,     1470,     2940, 0x14752d45
-0,      50714,      50714,     1470,     2940, 0x558cde10
-0,      52184,      52184,     1470,     2940, 0x735fee38
-0,      53654,      53654,     1470,     2940, 0xac8bb6c8
-0,      55124,      55124,     1470,     2940, 0xa503c73b
-0,      56594,      56594,     1470,     2940, 0x7cd588a3
-0,      58064,      58064,     1470,     2940, 0xa6974b04
-0,      59534,      59534,     1470,     2940, 0xbf448241
-0,      61004,      61004,     1470,     2940, 0x2a5c2759
-0,      62474,      62474,     1470,     2940, 0xd0de5ce0
-0,      63944,      63944,     1470,     2940, 0xc0486649
-0,      65414,      65414,     1470,     2940, 0x48b040af
-0,      66884,      66884,     1470,     2940, 0x82a338a9
+0,          0,          0,    11024,    22048, 0x0843bbad
+0,      11024,      11024,     1470,     2940, 0x16ff454e
+0,      12494,      12494,     1470,     2940, 0xffc43fc2
+0,      13964,      13964,     1470,     2940, 0x4bdbdcf4
+0,      15434,      15434,     1470,     2940, 0xad9fb7c2
+0,      16904,      16904,     1470,     2940, 0x7e09e2f3
+0,      18374,      18374,     1470,     2940, 0x3fd8194d
+0,      19844,      19844,     1470,     2940, 0x3f84e41c
+0,      21314,      21314,     1470,     2940, 0x4d49c1bc
+0,      22784,      22784,     1470,     2940, 0x802fcec0
+0,      24254,      24254,     1470,     2940, 0x73bfca27
+0,      25724,      25724,     1470,     2940, 0x55510c6d
+0,      27194,      27194,     1470,     2940, 0x417dca08
+0,      28664,      28664,     1470,     2940, 0x794acbd6
+0,      30134,      30134,     1470,     2940, 0x7de4a788
+0,      31604,      31604,     1470,     2940, 0xeea8a64a
+0,      33074,      33074,     1470,     2940, 0x1e45f779
+0,      34544,      34544,     1470,     2940, 0x795eda85
+0,      36014,      36014,     1470,     2940, 0xfe12f067
+0,      37484,      37484,     1470,     2940, 0x5b3bee02
+0,      38954,      38954,     1470,     2940, 0x6870b61c
+0,      40424,      40424,     1470,     2940, 0xfcd8d411
+0,      41894,      41894,     1470,     2940, 0x6433d298
+0,      43364,      43364,     1470,     2940, 0xb810c944
+0,      44834,      44834,     1470,     2940, 0xa0f2deab
+0,      46304,      46304,     1470,     2940, 0x1c06b258
+0,      47774,      47774,     1470,     2940, 0x0664b374
+0,      49244,      49244,     1470,     2940, 0xaafad6c2
+0,      50714,      50714,     1470,     2940, 0x7348e80a
+0,      52184,      52184,     1470,     2940, 0xc3d3d384
+0,      53654,      53654,     1470,     2940, 0x58ecd933
+0,      55124,      55124,     1470,     2940, 0xe93efa02
+0,      56594,      56594,     1470,     2940, 0x71fada5c
+0,      58064,      58064,     1470,     2940, 0x7ea7a8dd
+0,      59534,      59534,     1470,     2940, 0x0e73c977
+0,      61004,      61004,     1470,     2940, 0x2c09c91b
+0,      62474,      62474,     1470,     2940, 0xade3bc63
+0,      63944,      63944,     1470,     2940, 0x10049fba
+0,      65414,      65414,     1470,     2940, 0xf873b7de
+0,      66884,      66884,     1470,     2940, 0x223dcc39