diff --git a/includes/xna-dx/implementations.hpp b/includes/xna-dx/implementations.hpp
index f482526..c1dfdfc 100644
--- a/includes/xna-dx/implementations.hpp
+++ b/includes/xna-dx/implementations.hpp
@@ -31,7 +31,7 @@ namespace xna {
 		std::shared_ptr<RenderTarget2D> RenderTarget2D;
 		intptr_t WindowHandle{ 0 };
 
-		D3D_FEATURE_LEVEL FeatureLevels[7] =
+		inline static constexpr D3D_FEATURE_LEVEL FeatureLevels[7] =
 		{
 			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 6f049e7..d8fadb2 100644
--- a/sources/framework-dx/device.cpp
+++ b/sources/framework-dx/device.cpp
@@ -248,7 +248,7 @@ namespace xna {
 			//UINT Flags,
 			createDeviceFlags,
 			//_In_reads_opt_( FeatureLevels ) CONST D3D_FEATURE_LEVEL* pFeatureLevels,
-			impl.FeatureLevels,
+			GraphicsDeviceImplementation::FeatureLevels,
 			//UINT FeatureLevels,
 			7,
 			//UINT SDKVersion,