diff --git a/include/d3d9caps.h b/include/d3d9caps.h
index 5cc757b326f..424b20cd96c 100644
--- a/include/d3d9caps.h
+++ b/include/d3d9caps.h
@@ -116,6 +116,9 @@
 #define D3DPMISCCAPS_MRTPOSTPIXELSHADERBLENDING __MSABI_LONG(0x00080000)
 #define D3DPMISCCAPS_FOGVERTEXCLAMPED           __MSABI_LONG(0x00100000)
 
+#ifndef D3D_DISABLE_9EX
+#define D3DPMISCCAPS_POSTBLENDSRGBCONVERT       __MSABI_LONG(0x00200000)
+#endif
 
 #define D3DPRASTERCAPS_DITHER                     __MSABI_LONG(0x00000001)
 #define D3DPRASTERCAPS_PAT                        __MSABI_LONG(0x00000008)