diff --git a/man7/ipv6.7 b/man7/ipv6.7
index 5caa3ce03..f55850505 100644
--- a/man7/ipv6.7
+++ b/man7/ipv6.7
@@ -187,7 +187,9 @@ Argument is a pointer to boolean.
 Set delivery of the
 .B IPV6_PKTINFO
 control message on incoming datagrams.
-Such control messages contain a struct in6_pktinfo, as per RFC 3542.
+Such control messages contain a
+.IR "struct in6_pktinfo" ,
+as per RFC 3542.
 Only allowed for
 .B SOCK_DGRAM
 or