diff --git a/README b/README
index d60c3f407f..3eff95958a 100644
--- a/README
+++ b/README
@@ -149,13 +149,16 @@ Building
 		COMPAQ Tru64 UNIX 4.0D
 		COMPAQ Tru64 UNIX 5 (with IPv6 EAK)
 		FreeBSD 3.4-STABLE, 3.5, 4.0, 4.1
-		HP-UX 11
+		HP-UX 11.x, x < 11
 		IRIX64 6.5
 		NetBSD 1.5
 		Red Hat Linux 6.0, 6.1, 6.2, 7.0
 		Solaris 2.6, 7, 8
 		Windows NT/W2K
 
+	HP-UX 11.11 is not yet supported due to its incompatible
+	SIOCGLIFCONF ioctl.
+
 	Additionally, we have unverified reports of success building
 	previous versions of BIND 9 from users of the following systems: