diff --git a/include/dxgi1_2.idl b/include/dxgi1_2.idl
index eeabd031ed4..ef256d4fd81 100644
--- a/include/dxgi1_2.idl
+++ b/include/dxgi1_2.idl
@@ -213,7 +213,8 @@ interface IDXGIDevice2 : IDXGIDevice1
 
 typedef enum DXGI_SCALING {
     DXGI_SCALING_STRETCH = 0,
-    DXGI_SCALING_NONE = 1
+    DXGI_SCALING_NONE = 1,
+    DXGI_SCALING_ASPECT_RATIO_STRETCH = 2,
 } DXGI_SCALING;
 
 typedef struct DXGI_SWAP_CHAIN_DESC1 {