diff --git a/dlls/sti/sti.spec b/dlls/sti/sti.spec
index 189af5235a7..300e7fac4b7 100644
--- a/dlls/sti/sti.spec
+++ b/dlls/sti/sti.spec
@@ -2,6 +2,6 @@
 @ stdcall -private DllGetClassObject(ptr ptr ptr)
 @ stdcall -private DllRegisterServer()
 @ stdcall -private DllUnregisterServer()
-@ stdcall StiCreateInstance(ptr long ptr ptr)
+@ stdcall StiCreateInstance(ptr long ptr ptr) StiCreateInstanceW
 @ stdcall StiCreateInstanceA(ptr long ptr ptr)
 @ stdcall StiCreateInstanceW(ptr long ptr ptr)
diff --git a/dlls/sti/sti_main.c b/dlls/sti/sti_main.c
index c53d6bb145f..eed33bd17cc 100644
--- a/dlls/sti/sti_main.c
+++ b/dlls/sti/sti_main.c
@@ -172,14 +172,6 @@ HRESULT WINAPI DllCanUnloadNow( void )
     return S_FALSE;
 }
 
-/******************************************************************************
- *           StiCreateInstance   (STI.@)
- */
-HRESULT WINAPI StiCreateInstance( HINSTANCE hinst, DWORD dwVer, PSTIW *ppSti, LPUNKNOWN pUnkOuter )
-{
-    return STG_E_UNIMPLEMENTEDFUNCTION;
-}
-
 /******************************************************************************
  *           StiCreateInstanceA   (STI.@)
  */