diff --git a/dlls/ole32/ole2.c b/dlls/ole32/ole2.c
index b3c9bd8ac32..d2304fd5e6a 100644
--- a/dlls/ole32/ole2.c
+++ b/dlls/ole32/ole2.c
@@ -294,8 +294,8 @@ void WINAPI OleUninitialize(void)
 /******************************************************************************
  *		OleInitializeWOW	[OLE32.@]
  */
-HRESULT WINAPI OleInitializeWOW(DWORD x) {
-        FIXME("(0x%08lx),stub!\n",x);
+HRESULT WINAPI OleInitializeWOW(DWORD x, DWORD y) {
+        FIXME("(0x%08lx, 0x%08lx),stub!\n",x, y);
         return 0;
 }
 
diff --git a/dlls/ole32/ole32.spec b/dlls/ole32/ole32.spec
index cc50160b060..86477c116e6 100644
--- a/dlls/ole32/ole32.spec
+++ b/dlls/ole32/ole32.spec
@@ -188,7 +188,7 @@
 @ stdcall OleGetIconOfClass(ptr ptr long)
 @ stub OleGetIconOfFile
 @ stdcall OleInitialize(ptr)
-@ stdcall OleInitializeWOW(long)
+@ stdcall OleInitializeWOW(long long)
 @ stdcall OleIsCurrentClipboard(ptr)
 @ stdcall OleIsRunning(ptr)
 @ stdcall OleLoad(ptr ptr ptr ptr)