diff --git a/reactos/include/reactos/win32k/ntgdityp.h b/reactos/include/reactos/win32k/ntgdityp.h
index 3e6361a1455..8dbb9ee2ad7 100644
--- a/reactos/include/reactos/win32k/ntgdityp.h
+++ b/reactos/include/reactos/win32k/ntgdityp.h
@@ -214,6 +214,7 @@ typedef DWORD LFTYPE;
 /* TYPES *********************************************************************/
 
 typedef PVOID KERNEL_PVOID;
+typedef PVOID PUMDHPDEV;
 typedef D3DNTHAL_CONTEXTCREATEDATA D3DNTHAL_CONTEXTCREATEI;
 typedef LONG FIX;