diff --git a/include/rpc/auth.h b/include/rpc/auth.h
index 5833c02e429f..d39ad1205379 100644
--- a/include/rpc/auth.h
+++ b/include/rpc/auth.h
@@ -243,13 +243,14 @@ __END_DECLS
  * System style authentication
  * AUTH *authunix_create(machname, uid, gid, len, aup_gids)
  *	char *machname;
- *	uid_t uid;
- *	gid_t gid;
+ *	int uid;
+ *	int gid;
  *	int len;
- *	gid_t *aup_gids;
+ *	int *aup_gids;
  */
 __BEGIN_DECLS
-extern AUTH *authunix_create(char *, uid_t, gid_t, int, gid_t *);
+extern AUTH *authunix_create(char *, int, int, int,
+    int *);
 extern AUTH *authunix_create_default(void);	/* takes no parameters */
 extern AUTH *authnone_create(void);		/* takes no parameters */
 __END_DECLS
diff --git a/include/rpc/auth_unix.h b/include/rpc/auth_unix.h
index 08e156900db1..48373b2c24c7 100644
--- a/include/rpc/auth_unix.h
+++ b/include/rpc/auth_unix.h
@@ -60,10 +60,10 @@
 struct authunix_parms {
 	u_long	 aup_time;
 	char	*aup_machname;
-	uid_t	 aup_uid;
-	gid_t	 aup_gid;
+	int	 aup_uid;
+	int	 aup_gid;
 	u_int	 aup_len;
-	gid_t	*aup_gids;
+	int	*aup_gids;
 };
 
 #define authsys_parms authunix_parms