diff --git a/hw/xbox/nv2a/pgraph/texture.c b/hw/xbox/nv2a/pgraph/texture.c
index 8155353f8b..654cd2c572 100644
--- a/hw/xbox/nv2a/pgraph/texture.c
+++ b/hw/xbox/nv2a/pgraph/texture.c
@@ -384,12 +384,12 @@ uint8_t *pgraph_convert_texture_data(const TextureShape s, const uint8_t *data,
         }
     } else if (s.color_format == NV097_SET_TEXTURE_FORMAT_COLOR_SZ_R6G5B5) {
         assert(depth == 1); /* FIXME */
-        size = width * height * 3;
+        size = width * height * 4;
         converted_data = g_malloc(size);
         for (int y = 0; y < height; y++) {
             for (int x = 0; x < width; x++) {
                 uint16_t rgb655 = *(uint16_t *)(data + y * row_pitch + x * 2);
-                int8_t *pixel = (int8_t *)&converted_data[(y * width + x) * 3];
+                int8_t *pixel = (int8_t *)&converted_data[(y * width + x) * 4];
                 /* Maps 5 bit G and B signed value range to 8 bit
                  * signed values. R is probably unsigned.
                  */
@@ -397,6 +397,7 @@ uint8_t *pgraph_convert_texture_data(const TextureShape s, const uint8_t *data,
                 pixel[0] = ((rgb655 & 0xFC00) >> 10) * 0x7F / 0x3F;
                 pixel[1] = ((rgb655 & 0x03E0) >> 5) * 0xFF / 0x1F - 0x80;
                 pixel[2] = (rgb655 & 0x001F) * 0xFF / 0x1F - 0x80;
+                pixel[3] = 0x7F;
             }
         }
     } else if (s.color_format == NV097_SET_TEXTURE_FORMAT_COLOR_SZ_A4R4G4B4 ||
diff --git a/hw/xbox/nv2a/pgraph/vk/constants.h b/hw/xbox/nv2a/pgraph/vk/constants.h
index c2087fcf2e..60e72046a5 100644
--- a/hw/xbox/nv2a/pgraph/vk/constants.h
+++ b/hw/xbox/nv2a/pgraph/vk/constants.h
@@ -244,7 +244,7 @@ static const VkColorFormatInfo kelvin_color_format_vk_map[66] = {
         { VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G }
     },
     [NV097_SET_TEXTURE_FORMAT_COLOR_SZ_R6G5B5] = {
-        VK_FORMAT_R8G8B8_SNORM, // Converted
+        VK_FORMAT_R8G8B8A8_SNORM, // Converted
     },
     [NV097_SET_TEXTURE_FORMAT_COLOR_SZ_G8B8] = {
         VK_FORMAT_R8G8_UNORM,
diff --git a/hw/xbox/nv2a/pgraph/vk/texture.c b/hw/xbox/nv2a/pgraph/vk/texture.c
index 2e7dbdeb45..b77fc198e4 100644
--- a/hw/xbox/nv2a/pgraph/vk/texture.c
+++ b/hw/xbox/nv2a/pgraph/vk/texture.c
@@ -879,6 +879,7 @@ static unsigned int vk_format_texel_size(VkFormat format)
     case VK_FORMAT_A4R4G4B4_UNORM_PACK16:   return 2;
     case VK_FORMAT_R16_UNORM:               return 2;
     case VK_FORMAT_R8G8B8_SNORM:            return 3;
+    case VK_FORMAT_R8G8B8A8_SNORM:          return 4;
     case VK_FORMAT_B8G8R8A8_UNORM:          return 4;
     case VK_FORMAT_R8G8B8A8_UNORM:          return 4;
     case VK_FORMAT_R32_UINT:                return 4;