diff --git a/include/dxgibase.h b/include/dxgibase.h
index 1477f539..eb2ba265 100644
--- a/include/dxgibase.h
+++ b/include/dxgibase.h
@@ -23,6 +23,9 @@
 #ifndef __DXGI_BASE_H
 #define __DXGI_BASE_H
 
+#define DXGI_ERROR_INVALID_CALL   _HRESULT_TYPEDEF_(0x887A0001)
+#define DXGI_ERROR_DEVICE_REMOVED _HRESULT_TYPEDEF_(0x887A0005)
+
 typedef struct DXGI_SAMPLE_DESC
 {
     UINT Count;