diff --git a/include/d3d.h b/include/d3d.h
index 5aac6ad526b..aea2fa2a38a 100644
--- a/include/d3d.h
+++ b/include/d3d.h
@@ -37,6 +37,7 @@ DEFINE_GUID(IID_IDirect3DHALDevice,	0x84E63dE0,0x46AA,0x11CF,0x81,0x6F,0x00,0x00
 DEFINE_GUID(IID_IDirect3DMMXDevice,	0x881949a1,0xd6f3,0x11d0,0x89,0xab,0x00,0xa0,0xc9,0x05,0x41,0x29);
 DEFINE_GUID(IID_IDirect3DRefDevice,     0x50936643,0x13e9,0x11d1,0x89,0xaa,0x00,0xa0,0xc9,0x05,0x41,0x29);
 DEFINE_GUID(IID_IDirect3DTnLHalDevice,  0xf5049e78,0x4861,0x11d2,0xa4,0x07,0x00,0xa0,0xc9,0x06,0x29,0xa8);
+DEFINE_GUID(IID_IDirect3DNullDevice,    0x8767df22,0xbacc,0x11d1,0x89,0x69,0x00,0xa0,0xc9,0x06,0x29,0xa8);
 
 DEFINE_GUID(IID_IDirect3DDevice,	0x64108800,0x957d,0x11D0,0x89,0xAB,0x00,0xA0,0xC9,0x05,0x41,0x29);
 DEFINE_GUID(IID_IDirect3DDevice2,	0x93281501,0x8CF8,0x11D0,0x89,0xAB,0x00,0xA0,0xC9,0x05,0x41,0x29);
diff --git a/include/ddraw.h b/include/ddraw.h
index 7ec10e6c207..1f0ceaa4825 100644
--- a/include/ddraw.h
+++ b/include/ddraw.h
@@ -1058,6 +1058,10 @@ HRESULT WINAPI DirectDrawEnumerateExA( LPDDENUMCALLBACKEXA lpCallback, LPVOID lp
 HRESULT WINAPI DirectDrawEnumerateExW( LPDDENUMCALLBACKEXW lpCallback, LPVOID lpContext, DWORD dwFlags);
 #define DirectDrawEnumerateEx WINELIB_NAME_AW(DirectDrawEnumerateEx)
 
+typedef HRESULT (WINAPI * LPDIRECTDRAWENUMERATEEXA)( LPDDENUMCALLBACKEXA lpCallback, LPVOID lpContext, DWORD dwFlags);
+typedef HRESULT (WINAPI * LPDIRECTDRAWENUMERATEEXW)( LPDDENUMCALLBACKEXW lpCallback, LPVOID lpContext, DWORD dwFlags);
+DECL_WINELIB_TYPE_AW(LPDIRECTDRAWENUMERATEEX)
+
 /* flags for DirectDrawEnumerateEx */
 #define DDENUM_ATTACHEDSECONDARYDEVICES	0x00000001
 #define DDENUM_DETACHEDSECONDARYDEVICES	0x00000002