diff --git a/contrib/idn/idnkit-1.0-src/configure.in b/contrib/idn/idnkit-1.0-src/configure.in
index 5d46c70c76..c04ed609a9 100644
--- a/contrib/idn/idnkit-1.0-src/configure.in
+++ b/contrib/idn/idnkit-1.0-src/configure.in
@@ -1,4 +1,3 @@
-dnl $Id: configure.in,v 1.1 2003/06/04 00:25:25 marka Exp $
 dnl Process this file with autoconf to produce a configure script.
 dnl
 dnl Copyright (c) 2000 Japan Network Information Center.  All rights reserved.
@@ -277,6 +276,9 @@ guess)
 	    ic_libdir=
 	    ic_libname=
 	    case "$host" in
+	    ia64-hp-hpux*)
+		SO=so
+		;;
 	    *-hpux*)
 		SO=sl
 		;;