diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
index 58de374b58e7..9a23677c8873 100644
--- a/lib/libc/gen/Makefile.inc
+++ b/lib/libc/gen/Makefile.inc
@@ -55,6 +55,7 @@ MAN3+=  alarm.3 arc4random.3 clock.3 \
 MLINKS+=arc4random.3 arc4random_addrandom.3 arc4random.3 arc4random_stir.3
 MLINKS+=crypt.3 des_cipher.3 crypt.3 des_setkey.3 crypt.3 encrypt.3 \
 	crypt.3 setkey.3
+MLINKS+=ctermid.3 ctermid_r.3
 MLINKS+=directory.3 closedir.3 directory.3 dirfd.3 directory.3 opendir.3 \
 	directory.3 readdir.3 directory.3 rewinddir.3 directory.3 seekdir.3 \
 	directory.3 telldir.3