diff -r 0de2468a27e8 -r af839b9c0ed1 whois/whois.py
--- a/whois/whois.py	Fri Aug 15 17:11:52 2014 +0300
+++ b/whois/whois.py	Mon Aug 18 11:25:39 2014 +0300
@@ -164,6 +164,8 @@
 
     def choose_server(self, domain):
         """Choose initial lookup NIC host"""
+        if type(domain) is not unicode:
+            domain = domain.decode('utf-8').encode('idna')
         if (domain.endswith("-NORID")):
             return NICClient.NORIDHOST
         pos = domain.rfind('.')