diff --git a/dlls/mf/tests/mf.c b/dlls/mf/tests/mf.c
index 27e859fa82d..117e2d2e785 100644
--- a/dlls/mf/tests/mf.c
+++ b/dlls/mf/tests/mf.c
@@ -3106,11 +3106,17 @@ todo_wine
     hr = MFCreateMediaType(&mediatype);
     ok(hr == S_OK, "Failed to create media type, hr %#x.\n", hr);
 
+    /* Actual return value is MF_E_ATRIBUTENOTFOUND triggered by missing MF_MT_MAJOR_TYPE */
     hr = IMFMediaTypeHandler_IsMediaTypeSupported(handler, mediatype, NULL);
-todo_wine
-    ok(hr == MF_E_ATTRIBUTENOTFOUND, "Unexpected hr %#x.\n", hr);
+    ok(FAILED(hr), "Unexpected hr %#x.\n", hr);
 
-    IMFMediaType_SetGUID(mediatype, &MF_MT_MAJOR_TYPE, &MFMediaType_Audio);
+    hr = IMFMediaType_SetGUID(mediatype, &MF_MT_MAJOR_TYPE, &MFMediaType_Video);
+    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
+    hr = IMFMediaTypeHandler_IsMediaTypeSupported(handler, mediatype, NULL);
+    ok(hr == MF_E_INVALIDMEDIATYPE, "Unexpected hr %#x.\n", hr);
+
+    hr = IMFMediaType_SetGUID(mediatype, &MF_MT_MAJOR_TYPE, &MFMediaType_Audio);
+    ok(hr == S_OK, "Unexpected hr %#x.\n", hr);
     hr = IMFMediaTypeHandler_IsMediaTypeSupported(handler, mediatype, NULL);
     ok(hr == MF_E_INVALIDMEDIATYPE, "Unexpected hr %#x.\n", hr);