diff --git a/dlls/mfplat/mfplat.spec b/dlls/mfplat/mfplat.spec
index 5af717419bf..31d3777e87b 100644
--- a/dlls/mfplat/mfplat.spec
+++ b/dlls/mfplat/mfplat.spec
@@ -136,7 +136,7 @@
 @ stdcall MFRegisterLocalSchemeHandler(wstr ptr)
 @ stdcall MFRemovePeriodicCallback(long) rtworkq.RtwqRemovePeriodicCallback
 @ stdcall MFScheduleWorkItem(ptr ptr int64 ptr)
-@ stdcall MFScheduleWorkItemEx(ptr int64 ptr)
+@ stdcall MFScheduleWorkItemEx(ptr int64 ptr) rtworkq.RtwqScheduleWorkItem
 @ stub MFSerializeAttributesToStream
 @ stub MFSerializeEvent
 @ stub MFSerializeMediaTypeToStream
diff --git a/dlls/mfplat/queue.c b/dlls/mfplat/queue.c
index 6ad3977e594..2080a79f848 100644
--- a/dlls/mfplat/queue.c
+++ b/dlls/mfplat/queue.c
@@ -119,16 +119,6 @@ HRESULT WINAPI MFScheduleWorkItem(IMFAsyncCallback *callback, IUnknown *state, I
     return hr;
 }
 
-/***********************************************************************
- *      MFScheduleWorkItemEx (mfplat.@)
- */
-HRESULT WINAPI MFScheduleWorkItemEx(IMFAsyncResult *result, INT64 timeout, MFWORKITEM_KEY *key)
-{
-    TRACE("%p, %s, %p.\n", result, wine_dbgstr_longlong(timeout), key);
-
-    return RtwqScheduleWorkItem((IRtwqAsyncResult *)result, timeout, key);
-}
-
 /***********************************************************************
  *      MFInvokeCallback (mfplat.@)
  */