diff --git a/include/d3d.h b/include/d3d.h
index 9e4ccf2aee9..ba860a43a84 100644
--- a/include/d3d.h
+++ b/include/d3d.h
@@ -1309,8 +1309,8 @@ DECLARE_INTERFACE_(IDirect3DDevice7,IUnknown)
     STDMETHOD(SetViewport)(THIS_ D3DVIEWPORT7 *data) PURE;
     STDMETHOD(MultiplyTransform)(THIS_ D3DTRANSFORMSTATETYPE state, D3DMATRIX *matrix) PURE;
     STDMETHOD(GetViewport)(THIS_ D3DVIEWPORT7 *data) PURE;
-    STDMETHOD(SetMaterial)(THIS_ LPD3DMATERIAL7 lpMat) PURE;
-    STDMETHOD(GetMaterial)(THIS_ LPD3DMATERIAL7 lpMat) PURE;
+    STDMETHOD(SetMaterial)(THIS_ D3DMATERIAL7 *data) PURE;
+    STDMETHOD(GetMaterial)(THIS_ D3DMATERIAL7 *data) PURE;
     STDMETHOD(SetLight)(THIS_ DWORD dwLightIndex,LPD3DLIGHT7 lpLight) PURE;
     STDMETHOD(GetLight)(THIS_ DWORD dwLightIndex,LPD3DLIGHT7 lpLight) PURE;
     STDMETHOD(SetRenderState)(THIS_ D3DRENDERSTATETYPE dwRenderStateType, DWORD dwRenderState) PURE;