diff --git a/include/d3d10_1.idl b/include/d3d10_1.idl
index ba5517b7a0f..4ee49c6523b 100644
--- a/include/d3d10_1.idl
+++ b/include/d3d10_1.idl
@@ -48,8 +48,6 @@ cpp_quote("#define D3D10_1_FLOAT32_TO_INTEGER_TOLERANCE_IN_ULP (0.6f)")
 import "d3d10.idl";
 cpp_quote("#include <d3d10_1shader.h>")
 
-const UINT D3D10_1_SHADER_MAJOR_VERSION = 4;
-const UINT D3D10_1_SHADER_MINOR_VERSION = 1;
 
 typedef enum D3D10_FEATURE_LEVEL1
 {