diff --git a/ipatests/test_xmlrpc/test_radiusproxy_plugin.py b/ipatests/test_xmlrpc/test_radiusproxy_plugin.py
index a078eca8f..ada5dd942 100644
--- a/ipatests/test_xmlrpc/test_radiusproxy_plugin.py
+++ b/ipatests/test_xmlrpc/test_radiusproxy_plugin.py
@@ -72,6 +72,19 @@ class test_raduisproxy(Declarative):
         ),
 
 
+        dict(
+            desc='Try to add multiple radius proxy server %r' % radius1,
+            command=('radiusproxy_add', [radius1],
+                     dict(
+                     ipatokenradiusserver=radius1_fqdn,
+                     addattr=u'ipatokenradiusserver=radius1_fqdn',
+                     ipatokenradiussecret=password1,
+                     ),
+                     ),
+            expected=errors.OnlyOneValueAllowed(attr='ipatokenradiusserver')
+        ),
+
+
         dict(
             desc='Create %r' % radius1,
             command=('radiusproxy_add', [radius1],