diff --git a/dlls/mfplat/mfplat.spec b/dlls/mfplat/mfplat.spec
index 39fd7a9d441..a218087f6af 100644
--- a/dlls/mfplat/mfplat.spec
+++ b/dlls/mfplat/mfplat.spec
@@ -17,7 +17,7 @@
 @ stub LFGetGlobalPool
 @ stub MFAddPeriodicCallback
 @ stdcall MFAllocateWorkQueue(ptr)
-@ stub MFAllocateWorkQueueEx
+@ stdcall MFAllocateWorkQueueEx(long ptr)
 @ stub MFAppendCollection
 @ stub MFAverageTimePerFrameToFrameRate
 @ stub MFBeginCreateFile
diff --git a/dlls/mfplat/queue.c b/dlls/mfplat/queue.c
index 9a3922fce25..70efac36e85 100644
--- a/dlls/mfplat/queue.c
+++ b/dlls/mfplat/queue.c
@@ -387,6 +387,16 @@ HRESULT WINAPI MFAllocateWorkQueue(DWORD *queue)
     return alloc_user_queue(MF_STANDARD_WORKQUEUE, queue);
 }
 
+/***********************************************************************
+ *      MFAllocateWorkQueueEx (mfplat.@)
+ */
+HRESULT WINAPI MFAllocateWorkQueueEx(MFASYNC_WORKQUEUE_TYPE queue_type, DWORD *queue)
+{
+    TRACE("%d, %p.\n", queue_type, queue);
+
+    return alloc_user_queue(queue_type, queue);
+}
+
 /***********************************************************************
  *      MFLockWorkQueue (mfplat.@)
  */