diff --git a/sys/sys/lock.h b/sys/sys/lock.h
index e55d9929aa4..9a43443e5ae 100644
--- a/sys/sys/lock.h
+++ b/sys/sys/lock.h
@@ -220,7 +220,7 @@ void	witness_assert(struct lock_object *, int, const char *, int);
 
 #else	/* WITNESS */
 #define	WITNESS_INIT(lock)	(lock)->lo_flags |= LO_INITIALIZED
-#define WITNESS_DESTROY(lock)	(lock)->lo_flags &= ~LO_INITIALIZED
+#define	WITNESS_DESTROY(lock)	(lock)->lo_flags &= ~LO_INITIALIZED
 #define	WITNESS_LOCK(lock, flags, file, line)
 #define	WITNESS_UPGRADE(lock, flags, file, line)
 #define	WITNESS_DOWNGRADE(lock, flags, file, line)