diff --git a/docs/Makefile.inc b/docs/Makefile.inc
index 882bf228..adee39c0 100644
--- a/docs/Makefile.inc
+++ b/docs/Makefile.inc
@@ -37,6 +37,7 @@ MANPAGES = ares_cancel.3		\
   ares_dns_record_rr_get.3		\
   ares_dns_record_rr_get_const.3	\
   ares_dns_rec_type_fromstr.3		\
+  ares_dns_rec_type_tostr.3		\
   ares_dns_rec_type_t.3			\
   ares_dns_rr.3				\
   ares_dns_rr_get_addr.3		\