diff --git a/sys/sys/ucred.h b/sys/sys/ucred.h
index 33d64c036d52..a4f67113acb1 100644
--- a/sys/sys/ucred.h
+++ b/sys/sys/ucred.h
@@ -30,8 +30,8 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	@(#)ucred.h	8.2 (Berkeley) 1/4/94
- * $Id: ucred.h,v 1.4 1994/10/08 22:23:00 phk Exp $
+ *	@(#)ucred.h	8.4 (Berkeley) 1/9/95
+ * $Id: ucred.h,v 1.6 1996/02/24 07:53:38 hsu Exp $
  */
 
 #ifndef _SYS_UCRED_H_
@@ -47,18 +47,18 @@ struct ucred {
 	gid_t	cr_groups[NGROUPS];	/* groups */
 };
 #define cr_gid cr_groups[0]
-#define NOCRED ((struct ucred *)-1)	/* no credential available */
-#define FSCRED ((struct ucred *)-2)	/* filesystem credential */
+#define NOCRED ((struct ucred *)0)	/* no credential available */
+#define FSCRED ((struct ucred *)-1)	/* filesystem credential */
 
 #ifdef KERNEL
 #define	crhold(cr)	(cr)->cr_ref++
-struct ucred *crget(void);
-struct ucred *crcopy(struct ucred *);
-struct ucred *crdup(struct ucred *);
-extern void crfree(struct ucred *);
-extern int suser(struct ucred *, u_short *);
-int	groupmember __P((gid_t, struct ucred *));
 
+struct ucred	*crcopy __P((struct ucred *cr));
+struct ucred	*crdup __P((struct ucred *cr));
+void		crfree __P((struct ucred *cr));
+struct ucred	*crget __P((void));
+int		suser __P((struct ucred *cred, u_short *acflag));
+int		groupmember __P((gid_t gid, struct ucred *cred));
 #endif /* KERNEL */
 
 #endif /* !_SYS_UCRED_H_ */