diff --git a/dlls/mf/tests/mf.c b/dlls/mf/tests/mf.c
index 4b894df1de0..3dfd852643c 100644
--- a/dlls/mf/tests/mf.c
+++ b/dlls/mf/tests/mf.c
@@ -1139,7 +1139,7 @@ static void test_session_events(IMFMediaSession *session)
     ok(hr == MF_S_MULTIPLE_BEGIN, "Unexpected hr %#x.\n", hr);
 
     /* Same callback, different state. */
-    hr = IMFMediaSession_BeginGetEvent(session, &callback.IMFAsyncCallback_iface, (IUnknown *)&callback);
+    hr = IMFMediaSession_BeginGetEvent(session, &callback.IMFAsyncCallback_iface, (IUnknown *)&callback.IMFAsyncCallback_iface);
     ok(hr == MF_E_MULTIPLE_BEGIN, "Unexpected hr %#x.\n", hr);
 
     /* Different callback, same state. */