diff --git a/modules/python/dionaea/ftp.py b/modules/python/dionaea/ftp.py
index 4037dbed..6c7d5117 100644
--- a/modules/python/dionaea/ftp.py
+++ b/modules/python/dionaea/ftp.py
@@ -710,7 +710,7 @@ def handle_origin(self, parent):
 class FTPDataConnect(FTPDataCon):
     protocol_name = "ftpdataconnect"
 
-    def __init__(self, host, port, ctrl):
+    def __init__(self, host=None, port=None, ctrl=None):
         FTPDataCon.__init__(self, ctrl)
         self.connect(host, port)