diff --git a/man7/unix.7 b/man7/unix.7
index bab5c8b60..1ab218b3d 100644
--- a/man7/unix.7
+++ b/man7/unix.7
@@ -332,7 +332,8 @@ User memory address was not valid.
 .TP
 .B EINVAL
 Invalid argument passed.
-A common cause is the missing setting of AF_UNIX
+A common cause is the missing setting of
+.B AF_UNIX
 in the
 .I sun_type
 field of passed addresses or the socket being in an