diff --git a/test/fixtures/poro.rb b/test/fixtures/poro.rb
index 3c3068417..f5927fdaa 100644
--- a/test/fixtures/poro.rb
+++ b/test/fixtures/poro.rb
@@ -15,6 +15,10 @@ def id
     @attributes[:id] || @attributes['id'] || object_id
   end
 
+  def to_param
+    id
+  end
+
   def method_missing(meth, *args)
     if meth.to_s =~ /^(.*)=$/
       @attributes[$1.to_sym] = args[0]