diff --git a/include/audioclient.idl b/include/audioclient.idl
index 72b3ae942eb..0628444bef3 100644
--- a/include/audioclient.idl
+++ b/include/audioclient.idl
@@ -191,7 +191,7 @@ interface IAudioClock2 : IUnknown
 [
     local,
     pointer_default(unique),
-    uuid("f6e4c0a0-46d9-4fb9-be21-57a3ef2b626c"),
+    uuid("f6e4c0a0-46d9-4fb8-be21-57a3ef2b626c"),
     object,
 ]
 interface IAudioClockAdjustment : IUnknown