diff --git a/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.cpp b/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.cpp
index c2bf5f765..543a8021c 100644
--- a/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.cpp
+++ b/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.cpp
@@ -42,11 +42,12 @@ namespace s3d
 
 		// 4x MSAA サポート状況を取得
 		{
-			constexpr std::array<TextureFormat, 10> formats =
+			constexpr std::array<TextureFormat, 11> formats =
 			{
 				TextureFormat::Unknown,
 				TextureFormat::R8G8B8A8_Unorm,
 				TextureFormat::R8G8B8A8_Unorm_SRGB,
+				TextureFormat::R16G16_Unorm,
 				TextureFormat::R16G16_Float,
 				TextureFormat::R32_Float,
 				TextureFormat::R10G10B10A2_Unorm,
diff --git a/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.hpp b/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.hpp
index 343ed696d..d563350aa 100644
--- a/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.hpp
+++ b/Siv3D/src/Siv3D-Platform/WindowsDesktop/Siv3D/Texture/D3D11/CTexture_D3D11.hpp
@@ -35,7 +35,7 @@ namespace s3d
 		AssetHandleManager<Texture::IDType, D3D11Texture> m_textures{ U"Texture" };
 
 		// マルチサンプルの対応
-		std::array<bool, 10> m_multiSampleAvailable = {};
+		std::array<bool, 11> m_multiSampleAvailable = {};
 
 	public: