diff --git a/uppsrc/Core/Mt.h b/uppsrc/Core/Mt.h
index c5f8aa38e..81a54dfb2 100644
--- a/uppsrc/Core/Mt.h
+++ b/uppsrc/Core/Mt.h
@@ -234,7 +234,7 @@ class ConditionVariable {
 	Mutex                 mutex;
 	friend struct sCVWaiter_;
 	
-	sCVWaiter_ *head, *tail;
+	struct sCVWaiter_ *head, *tail;
 	
 public:
 	void Wait(Mutex& m);