diff --git a/sys/sys/user.h b/sys/sys/user.h
index 8576f6d4d4b8..f7b18dffc21a 100644
--- a/sys/sys/user.h
+++ b/sys/sys/user.h
@@ -271,7 +271,7 @@ struct user {
 #define	KF_FD_TYPE_CWD	-1	/* Current working directory */
 #define	KF_FD_TYPE_ROOT	-2	/* Root directory */
 #define	KF_FD_TYPE_JAIL	-3	/* Jail directory */
-#define	KF_FD_TYPE_TRACE	-4	/* ptrace vnode */
+#define	KF_FD_TYPE_TRACE	-4	/* Ktrace vnode */
 #define	KF_FD_TYPE_TEXT	-5	/* Text vnode */
 #define	KF_FD_TYPE_CTTY	-6	/* Controlling terminal */