diff --git a/share/man/man9/mbuf.9 b/share/man/man9/mbuf.9
index 0286d244d553..1f5b61b85ab9 100644
--- a/share/man/man9/mbuf.9
+++ b/share/man/man9/mbuf.9
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 27, 2017
+.Dd June 28, 2019
 .Dt MBUF 9
 .Os
 .\"
@@ -247,17 +247,17 @@ types are defined as follows:
 The available external buffer types are defined as follows:
 .Bd -literal
 /* external buffer types */
-#define EXT_CLUSTER	1	/* mbuf cluster */
-#define EXT_SFBUF	2	/* sendfile(2)'s sf_bufs */
-#define EXT_JUMBOP	3	/* jumbo cluster 4096 bytes */
-#define EXT_JUMBO9	4	/* jumbo cluster 9216 bytes */
-#define EXT_JUMBO16	5	/* jumbo cluster 16184 bytes */
-#define EXT_PACKET	6	/* mbuf+cluster from packet zone */
-#define EXT_MBUF	7	/* external mbuf reference */
-#define EXT_NET_DRV	252	/* custom ext_buf provided by net driver(s) */
-#define EXT_MOD_TYPE	253	/* custom module's ext_buf type */
-#define EXT_DISPOSABLE	254	/* can throw this buffer away w/page flipping */
-#define EXT_EXTREF	255	/* has externally maintained ref_cnt ptr */
+#define	EXT_CLUSTER	1	/* mbuf cluster */
+#define	EXT_SFBUF	2	/* sendfile(2)'s sf_bufs */
+#define	EXT_JUMBOP	3	/* jumbo cluster 4096 bytes */
+#define	EXT_JUMBO9	4	/* jumbo cluster 9216 bytes */
+#define	EXT_JUMBO16	5	/* jumbo cluster 16184 bytes */
+#define	EXT_PACKET	6	/* mbuf+cluster from packet zone */
+#define	EXT_MBUF	7	/* external mbuf reference */
+#define	EXT_NET_DRV	252	/* custom ext_buf provided by net driver(s) */
+#define	EXT_MOD_TYPE	253	/* custom module's ext_buf type */
+#define	EXT_DISPOSABLE	254	/* can throw this buffer away w/page flipping */
+#define	EXT_EXTREF	255	/* has externally maintained ref_cnt ptr */
 .Ed
 .Pp
 If the