diff --git a/dlls/strmbase/outputqueue.c b/dlls/strmbase/outputqueue.c
index cbcd9640766..36960e38147 100644
--- a/dlls/strmbase/outputqueue.c
+++ b/dlls/strmbase/outputqueue.c
@@ -101,7 +101,7 @@ HRESULT WINAPI OutputQueue_Construct(
 
     EnterCriticalSection(&This->csQueue);
     if (bAuto && pInputPin->pMemInputPin)
-        threaded = IMemInputPin_ReceiveCanBlock(pInputPin->pMemInputPin);
+        threaded = IMemInputPin_ReceiveCanBlock(pInputPin->pMemInputPin) == S_OK;
     else
         threaded = bQueue;