diff --git a/contrib/groff/tmac/tty-char.tmac b/contrib/groff/tmac/tty-char.tmac
index aeeda50e7f0e..c5483acd974e 100644
--- a/contrib/groff/tmac/tty-char.tmac
+++ b/contrib/groff/tmac/tty-char.tmac
@@ -135,6 +135,12 @@
 .tty-char \[rf] _|
 .tty-char \[lc] |~
 .tty-char \[rc] ~|
+.tty-char \[lb] `-
+.tty-char \[rb] -'
+.tty-char \[lk] {
+.tty-char \[rk] }
+.tty-char \[lt] ,-
+.tty-char \[rt] -.
 .\" Latin-1 characters
 .tty-char \[r!] \z,i
 .tty-char \[Po] \z-L