diff --git a/man7/ipv6.7 b/man7/ipv6.7
index 366ae140b..e1d3c0060 100644
--- a/man7/ipv6.7
+++ b/man7/ipv6.7
@@ -313,7 +313,9 @@ Argument is a pointer to boolean.
 .B IPV6_ROUTER_ALERT
 Pass forwarded packets containing a router alert hop-by-hop option to
 this socket.
-Only allowed for SOCK_RAW sockets.
+Only allowed for
+.B SOCK_RAW
+sockets.
 The tapped packets are not forwarded by the kernel, it is the
 user's responsibility to send them out again.
 Argument is a pointer to an integer.