diff --git a/sbin/umount/umount.c b/sbin/umount/umount.c
index 6a58fdb5524e..9119c5be0da1 100644
--- a/sbin/umount/umount.c
+++ b/sbin/umount/umount.c
@@ -427,7 +427,7 @@ umountfs(struct statfs *sfs)
 			return (1);
 		}
 	}
-	/* Mark this this file system as unmounted. */
+	/* Mark this file system as unmounted. */
 	getmntentry(NULL, NULL, &sfs->f_fsid, REMOVE);
 	if (vflag)
 		(void)printf("%s: unmount from %s\n", sfs->f_mntfromname,