diff --git a/include/d3d11sdklayers.idl b/include/d3d11sdklayers.idl
index e54ac01b033..54236fcdac7 100644
--- a/include/d3d11sdklayers.idl
+++ b/include/d3d11sdklayers.idl
@@ -1239,6 +1239,19 @@ interface ID3D11Debug : IUnknown {
     HRESULT ValidateContextForDispatch(ID3D11DeviceContext *pContext);
 }
 
+[
+    object,
+    uuid(1ef337e3-58e7-4f83-a692-db221f5ed47e),
+    local,
+    pointer_default(unique)
+]
+interface ID3D11SwitchToRef : IUnknown {
+    BOOL SetUseRef(
+        [in] BOOL useref
+    );
+    BOOL GetUseRef();
+}
+
 [
     object,
     uuid(6543dbb6-1b48-42f5-ab82-e97ec74326f6),