If you instantiate a logger in a filter class you'll have the same problem. The message is telling you that you can't use a logger in part of Logback's init. Sent from my Verizon Wireless Phone ----- Reply message ----- From: "BAKHTI Mohammed" <onlymed@hotmail.com> Date: Mon, Jul 4, 2011 3:31 am Subject: [logback-user] Problème with Logback.XML To: <logback-user@qos.ch> _______________________________________________ Logback-user mailing list Logback-user@qos.ch http://qos.ch/mailman/listinfo/logback-user