fix bug introduced in selflink code
diff --git a/xos/core/admin.py b/xos/core/admin.py
index e2a7adc..a83ec7d 100644
--- a/xos/core/admin.py
+++ b/xos/core/admin.py
@@ -310,7 +310,7 @@
 
     def get_change_url(self, id):
         """ Get the URL to a change form in the admin for this model """
-        reverse_path = self.selflink_reverse_path # "admin:%s_change" % (model._meta.db_table)
+        reverse_path = self.selflink_reverse_path # "admin:%s_change" % (self.selflink_model._meta.db_table)
         try:
             url = reverse(reverse_path, args=(id,))
         except NoReverseMatch: