diff --git a/include/d3d11_3.idl b/include/d3d11_3.idl
index 4f9ea797416..f188a37e34f 100644
--- a/include/d3d11_3.idl
+++ b/include/d3d11_3.idl
@@ -49,6 +49,7 @@ typedef enum D3D11_FENCE_FLAG
     D3D11_FENCE_FLAG_NONE = 0x1,
     D3D11_FENCE_FLAG_SHARED = 0x2,
     D3D11_FENCE_FLAG_SHARED_CROSS_ADAPTER = 0x4,
+    D3D11_FENCE_FLAG_NON_MONITORED = 0x8,
 } D3D11_FENCE_FLAG;
 
 typedef struct D3D11_TEXTURE2D_DESC1