diff --git a/DirectXTex/DirectXTex.h b/DirectXTex/DirectXTex.h
index 8e67c07..bd5f85a 100644
--- a/DirectXTex/DirectXTex.h
+++ b/DirectXTex/DirectXTex.h
@@ -20,7 +20,6 @@
 #if !defined(__d3d11_h__) && !defined(__d3d11_x_h__) && !defined(__d3d12_h__) && !defined(__d3d12_x_h__)
 #if defined(_XBOX_ONE) && defined(_TITLE)
 #include <d3d11_x.h>
-#define DCOMMON_H_INCLUDED
 #else
 #include <d3d11_1.h>
 #endif