diff --git a/reactos/include/reactos/shlwapi_undoc.h b/reactos/include/reactos/shlwapi_undoc.h
index 6e6edae2fb8..a5e76918350 100644
--- a/reactos/include/reactos/shlwapi_undoc.h
+++ b/reactos/include/reactos/shlwapi_undoc.h
@@ -51,6 +51,7 @@ HRESULT WINAPI MayQSForward(IUnknown* lpUnknown, PVOID lpReserved, REFGUID riidC
 HRESULT WINAPI MayExecForward(IUnknown* lpUnknown, INT iUnk, REFGUID pguidCmdGroup, DWORD nCmdID, DWORD nCmdexecopt, VARIANT *pvaIn, VARIANT *pvaOut);
 HRESULT WINAPI IsQSForward(REFGUID pguidCmdGroup,ULONG cCmds, OLECMD *prgCmds);
 BOOL WINAPI SHIsChildOrSelf(HWND hParent, HWND hChild);
+HRESULT WINAPI SHForwardContextMenuMsg(IUnknown* pUnk, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT* pResult, BOOL useIContextMenu2);
 
 
 BOOL WINAPI SHIsEmptyStream(IStream*);