diff --git a/lib/vmfloaty/nonstandard_pooler.rb b/lib/vmfloaty/nonstandard_pooler.rb
index 90722c0..5d755a9 100644
--- a/lib/vmfloaty/nonstandard_pooler.rb
+++ b/lib/vmfloaty/nonstandard_pooler.rb
@@ -22,7 +22,7 @@ def self.list_active(verbose, url, token, _user)
     status['reserved_hosts'] || []
   end
 
-  def self.retrieve(verbose, os_type, token, url, _user, _options)
+  def self.retrieve(verbose, os_type, token, url, _user, _options, ondemand = nil)
     conn = Http.get_conn(verbose, url)
     conn.headers['X-AUTH-TOKEN'] = token if token