diff --git a/includes/xna-dx/implementations.hpp b/includes/xna-dx/implementations.hpp
index 7c0f302..a049b13 100644
--- a/includes/xna-dx/implementations.hpp
+++ b/includes/xna-dx/implementations.hpp
@@ -31,7 +31,8 @@ namespace xna {
 		std::shared_ptr<RenderTarget2D> RenderTarget2D;
 		intptr_t WindowHandle{ 0 };
 
-		inline static constexpr D3D_FEATURE_LEVEL FeatureLevels[7] =
+		static constexpr int FeatureLevelCount = 7;
+		inline static constexpr D3D_FEATURE_LEVEL FeatureLevels[FeatureLevelCount] =
 		{
 			D3D_FEATURE_LEVEL_11_1,
 			D3D_FEATURE_LEVEL_11_0,
diff --git a/sources/framework-dx/device.cpp b/sources/framework-dx/device.cpp
index 9c344ca..20b30fa 100644
--- a/sources/framework-dx/device.cpp
+++ b/sources/framework-dx/device.cpp
@@ -14,7 +14,6 @@ namespace xna {
 #if _DEBUG
 		createDeviceFlags = D3D11_CREATE_DEVICE_FLAG::D3D11_CREATE_DEVICE_DEBUG;
 #endif  
-
 		const auto& pAdapter = GraphicsAdapter::UseNullDevice() ? NULL : currentAdapter.Implementation->Adapter.Get();
 
 		//
@@ -39,7 +38,7 @@ namespace xna {
 			//_In_reads_opt_( FeatureLevels ) CONST D3D_FEATURE_LEVEL* pFeatureLevels,
 			FeatureLevels,
 			//UINT FeatureLevels,
-			7,
+			static_cast<UINT>(FeatureLevelCount),
 			//UINT SDKVersion,
 			D3D11_SDK_VERSION,
 			//_COM_Outptr_opt_ ID3D11Device** ppDevice