diff --git a/webssh/handler.py b/webssh/handler.py
index 33b7ec6..88bd757 100644
--- a/webssh/handler.py
+++ b/webssh/handler.py
@@ -58,7 +58,7 @@ class MixinHandler(object):
 
         if context._orig_protocol == 'http':
             ipaddr = to_ip_address(ip)
-            if ipaddr.is_global:
+            if not ipaddr.is_private:
                 return True
 
     def set_default_headers(self):