diff --git a/dlls/windowscodecs/ddsformat.c b/dlls/windowscodecs/ddsformat.c
index 2a9fc5c4bc5..9e6886e7ea7 100644
--- a/dlls/windowscodecs/ddsformat.c
+++ b/dlls/windowscodecs/ddsformat.c
@@ -214,21 +214,31 @@ static struct dds_format {
       &GUID_WICPixelFormat128bppRGBAFloat, 128, DXGI_FORMAT_R32G32B32A32_FLOAT },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 32, 0xFF,0xFF00,0xFF0000,0xFF000000 },
       &GUID_WICPixelFormat32bppRGBA,        32, DXGI_FORMAT_R8G8B8A8_UNORM },
+    { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 32, 0xFF,0xFF00,0xFF0000,0 },
+      &GUID_WICPixelFormat32bppRGB,         32, DXGI_FORMAT_UNKNOWN },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 32, 0xFF0000,0xFF00,0xFF,0xFF000000 },
       &GUID_WICPixelFormat32bppBGRA,        32, DXGI_FORMAT_B8G8R8A8_UNORM },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 32, 0xFF0000,0xFF00,0xFF,0 },
       &GUID_WICPixelFormat32bppBGR,         32, DXGI_FORMAT_B8G8R8X8_UNORM },
     /* The red and blue masks are swapped for DXGI_FORMAT_R10G10B10A2_UNORM.
-     * For "correct" one, the RGB masks should be 0x3FF00000,0xFFC00,0x3FF.
+     * For "correct" one, the RGB masks should be 0x3FF,0xFFC00,0x3FF00000.
      * see: https://walbourn.github.io/dds-update-and-1010102-problems */
+    { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 32, 0x3FF00000,0xFFC00,0x3FF,0xC0000000 },
+      &GUID_WICPixelFormat32bppR10G10B10A2, 32, DXGI_FORMAT_R10G10B10A2_UNORM },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 32, 0x3FF,0xFFC00,0x3FF00000,0xC0000000 },
-      &GUID_WICPixelFormat32bppRGBA1010102, 32, DXGI_FORMAT_R10G10B10A2_UNORM },
+      &GUID_WICPixelFormat32bppRGBA1010102, 32, DXGI_FORMAT_UNKNOWN },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB ,      0, 32, 0xFFFF,0xFFFF0000,0,0 },
       &GUID_WICPixelFormatUndefined,        0,  DXGI_FORMAT_R16G16_UNORM },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB ,      0, 32, 0xFFFFFFFF,0,0,0 },
       &GUID_WICPixelFormat32bppGrayFloat,   32, DXGI_FORMAT_R32_FLOAT },
+    { { sizeof(DDS_PIXELFORMAT), DDPF_RGB ,      0, 24, 0xFF0000,0x00FF00,0x0000FF,0 },
+      &GUID_WICPixelFormat24bppBGR,         24, DXGI_FORMAT_UNKNOWN },
+    { { sizeof(DDS_PIXELFORMAT), DDPF_RGB ,      0, 24, 0x0000FF,0x00FF00,0xFF0000,0 },
+      &GUID_WICPixelFormat24bppRGB,         24, DXGI_FORMAT_UNKNOWN },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 16, 0xF800,0x7E0,0x1F,0 },
       &GUID_WICPixelFormat16bppBGR565,      16, DXGI_FORMAT_B5G6R5_UNORM },
+    { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 16, 0x7C00,0x3E0,0x1F,0 },
+      &GUID_WICPixelFormat16bppBGR555,      16, DXGI_FORMAT_UNKNOWN },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 16, 0x7C00,0x3E0,0x1F,0x8000 },
       &GUID_WICPixelFormat16bppBGRA5551,    16, DXGI_FORMAT_B5G5R5A1_UNORM },
     { { sizeof(DDS_PIXELFORMAT), DDPF_RGB,       0, 16, 0xF00,0xF0,0xF,0xF000 },
diff --git a/dlls/windowscodecs/tests/ddsformat.c b/dlls/windowscodecs/tests/ddsformat.c
index b1beebf2fbf..2e7304b9d42 100644
--- a/dlls/windowscodecs/tests/ddsformat.c
+++ b/dlls/windowscodecs/tests/ddsformat.c
@@ -941,8 +941,7 @@ static void test_dds_decoder_frame_properties(IWICBitmapFrameDecode *frame_decod
     hr = IWICBitmapFrameDecode_GetPixelFormat(frame_decode, &pixel_format);
     ok(hr == S_OK, "Test %u, frame %u: GetPixelFormat failed, hr %#x\n", i, frame_index, hr);
     if (hr != S_OK) return;
-    todo_wine_if(IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat24bppBGR) ||
-                 IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat96bppRGBFloat))
+    todo_wine_if(IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat96bppRGBFloat))
     ok(IsEqualGUID(&pixel_format, test_data[i].expected_pixel_format),
        "Test %u, frame %u: Expected pixel format %s, got %s\n",
        i, frame_index, debugstr_guid(test_data[i].expected_pixel_format), debugstr_guid(&pixel_format));
@@ -1077,8 +1076,7 @@ static void test_dds_decoder_frame_data(IWICBitmapFrameDecode* frame, IWICDdsFra
     hr = IWICBitmapFrameDecode_CopyPixels(frame, NULL, 0, 0, NULL);
     ok(hr == E_INVALIDARG, "Test %u, frame %u: CopyPixels got unexpected hr %#x\n", i, frame_index, hr);
 
-    todo_wine_if(IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat24bppBGR) ||
-                 IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat96bppRGBFloat)) {
+    todo_wine_if(IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat96bppRGBFloat)) {
     hr = IWICBitmapFrameDecode_CopyPixels(frame, &rect_test_a, stride, sizeof(buffer), buffer);
     ok(hr == E_INVALIDARG, "Test %u, frame %u: CopyPixels got unexpected hr %#x\n", i, frame_index, hr);
     hr = IWICBitmapFrameDecode_CopyPixels(frame, &rect_test_b, stride, sizeof(buffer), buffer);
@@ -1128,8 +1126,7 @@ static void test_dds_decoder_frame_data(IWICBitmapFrameDecode* frame, IWICDdsFra
         memcpy(pixels, test_data[i].data + block_offset, frame_size);
     }
 
-    todo_wine_if(IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat24bppBGR) ||
-                 IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat96bppRGBFloat)) {
+    todo_wine_if(IsEqualGUID(test_data[i].expected_pixel_format, &GUID_WICPixelFormat96bppRGBFloat)) {
     memset(buffer, 0, sizeof(buffer));
     hr = IWICBitmapFrameDecode_CopyPixels(frame, &rect, stride, sizeof(buffer), buffer);
     ok(hr == S_OK, "Test %u, frame %u: CopyPixels failed, hr %#x\n", i, frame_index, hr);