diff --git a/include/unistd.h b/include/unistd.h
index 989a459650fb..e88da1713814 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -49,10 +49,10 @@
 #endif
 
 #ifndef _POSIX_SOURCE
-#define F_ULOCK         0	/* unlock locked section */
-#define F_LOCK          1	/* lock a section for exclusive use */
-#define F_TLOCK         2	/* test and lock a section for exclusive use */
-#define F_TEST          3	/* test a section for locks by other processes */
+#define	F_ULOCK		0	/* unlock locked section */
+#define	F_LOCK		1	/* lock a section for exclusive use */
+#define	F_TLOCK		2	/* test and lock a section for exclusive use */
+#define	F_TEST		3	/* test a section for locks by other procs */
 #endif
 
 __BEGIN_DECLS
@@ -147,7 +147,7 @@ int	 initgroups __P((const char *, int));
 int	 iruserok __P((unsigned long, int, const char *, const char *));
 int	 issetugid __P((void));
 int	 lchown __P((const char *, uid_t, gid_t));
-int     lockf __P((int, int, off_t));
+int	 lockf __P((int, int, off_t));
 char	*mkdtemp __P((char *));
 int	 mknod __P((const char *, mode_t, dev_t));
 int	 mkstemp __P((char *));