diff --git a/dlls/d3d8/device.c b/dlls/d3d8/device.c
index 3b7b40b95de..525ded9e9b9 100644
--- a/dlls/d3d8/device.c
+++ b/dlls/d3d8/device.c
@@ -1318,7 +1318,7 @@ HRESULT WINAPI IDirect3DDevice8Impl_DrawRectPatch(LPDIRECT3DDEVICE8 iface, UINT
     IDirect3DDevice8Impl *This = (IDirect3DDevice8Impl *)iface;
     TRACE("(%p) Relay\n", This);
 
-    return IWineD3DDevice_DrawRectPatch(This->WineD3DDevice, Handle, pNumSegs, pRectPatchInfo);
+    return IWineD3DDevice_DrawRectPatch(This->WineD3DDevice, Handle, pNumSegs, (WINED3DRECTPATCH_INFO *)pRectPatchInfo);
 }
 
 HRESULT WINAPI IDirect3DDevice8Impl_DrawTriPatch(LPDIRECT3DDEVICE8 iface, UINT Handle,CONST float* pNumSegs,CONST D3DTRIPATCH_INFO* pTriPatchInfo) {
diff --git a/dlls/d3d9/device.c b/dlls/d3d9/device.c
index 0d7baa9964b..c61bf15599b 100644
--- a/dlls/d3d9/device.c
+++ b/dlls/d3d9/device.c
@@ -796,7 +796,7 @@ HRESULT  WINAPI  IDirect3DDevice9Impl_GetIndices(LPDIRECT3DDEVICE9 iface, IDirec
 HRESULT  WINAPI  IDirect3DDevice9Impl_DrawRectPatch(LPDIRECT3DDEVICE9 iface, UINT Handle, CONST float* pNumSegs, CONST D3DRECTPATCH_INFO* pRectPatchInfo) {
     IDirect3DDevice9Impl *This = (IDirect3DDevice9Impl *)iface;
     TRACE("(%p) Relay\n", This);
-    return IWineD3DDevice_DrawRectPatch(This->WineD3DDevice, Handle, pNumSegs, pRectPatchInfo);
+    return IWineD3DDevice_DrawRectPatch(This->WineD3DDevice, Handle, pNumSegs, (WINED3DRECTPATCH_INFO *)pRectPatchInfo);
 }
 /*http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/reference/d3d/interfaces/idirect3ddevice9/DrawTriPatch.asp*/
 HRESULT  WINAPI  IDirect3DDevice9Impl_DrawTriPatch(LPDIRECT3DDEVICE9 iface, UINT Handle, CONST float* pNumSegs, CONST D3DTRIPATCH_INFO* pTriPatchInfo) {
diff --git a/dlls/wined3d/device.c b/dlls/wined3d/device.c
index ea74a206726..1a55b8e1fd2 100644
--- a/dlls/wined3d/device.c
+++ b/dlls/wined3d/device.c
@@ -5810,7 +5810,7 @@ OpenGL evaluators or  tessellate surfaces within your application.
 */
 
 /* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/graphics/reference/d3d/interfaces/idirect3ddevice9/DrawRectPatch.asp */
-HRESULT WINAPI IWineD3DDeviceImpl_DrawRectPatch(IWineD3DDevice *iface, UINT Handle, CONST float* pNumSegs, CONST D3DRECTPATCH_INFO* pRectPatchInfo) {
+HRESULT WINAPI IWineD3DDeviceImpl_DrawRectPatch(IWineD3DDevice *iface, UINT Handle, CONST float* pNumSegs, CONST WINED3DRECTPATCH_INFO* pRectPatchInfo) {
     IWineD3DDeviceImpl *This = (IWineD3DDeviceImpl *)iface;
     TRACE("(%p) Handle(%d) noSegs(%p) rectpatch(%p)\n", This, Handle, pNumSegs, pRectPatchInfo);
     FIXME("(%p) : Stub\n", This);
diff --git a/include/wine/wined3d_interface.h b/include/wine/wined3d_interface.h
index f1ff945dc53..255ecea64ec 100644
--- a/include/wine/wined3d_interface.h
+++ b/include/wine/wined3d_interface.h
@@ -415,7 +415,7 @@ DECLARE_INTERFACE_(IWineD3DDevice,IWineD3DBase)
     STDMETHOD(DrawIndexedPrimitive)(THIS_ D3DPRIMITIVETYPE  PrimitiveType,INT baseVIdx, UINT  minIndex,UINT  NumVertices,UINT  startIndex,UINT  primCount) PURE;
     STDMETHOD(DrawPrimitiveUP)(THIS_ D3DPRIMITIVETYPE  PrimitiveType,UINT  PrimitiveCount,CONST void * pVertexStreamZeroData,UINT  VertexStreamZeroStride) PURE;
     STDMETHOD(DrawIndexedPrimitiveUP)(THIS_ D3DPRIMITIVETYPE  PrimitiveType,UINT  MinVertexIndex,UINT  NumVertexIndices,UINT  PrimitiveCount,CONST void * pIndexData,WINED3DFORMAT  IndexDataFormat,CONST void * pVertexStreamZeroData,UINT  VertexStreamZeroStride) PURE;
-    STDMETHOD(DrawRectPatch)(THIS_ UINT Handle, CONST float* pNumSegs, CONST D3DRECTPATCH_INFO* pRectPatchInfo) PURE;
+    STDMETHOD(DrawRectPatch)(THIS_ UINT Handle, CONST float* pNumSegs, CONST WINED3DRECTPATCH_INFO* pRectPatchInfo) PURE;
     STDMETHOD(DrawTriPatch)(THIS_ UINT Handle, CONST float* pNumSegs, CONST D3DTRIPATCH_INFO* pTriPatchInfo) PURE;
     STDMETHOD(DeletePatch)(THIS_ UINT Handle) PURE;
     STDMETHOD(ColorFill)(THIS_ struct IWineD3DSurface* pSurface, CONST D3DRECT* pRect, D3DCOLOR color) PURE;