diff --git a/sys/security/audit/audit.h b/sys/security/audit/audit.h
index 7e13806a017..30393febfd3 100644
--- a/sys/security/audit/audit.h
+++ b/sys/security/audit/audit.h
@@ -468,6 +468,8 @@ void	 audit_thread_free(struct thread *td);
 #define	AUDIT_ARG_VNODE1(vp)
 #define	AUDIT_ARG_VNODE2(vp)
 
+#define	AUDITING_TD(td)		0
+
 #define	AUDIT_SYSCALL_ENTER(code, td)	0
 #define	AUDIT_SYSCALL_EXIT(error, td)