Attached you can find a junit to replicate the issue. Cheers. Francesco
PahoMQTTWildcardTest.java <http://activemq.2283324.n4.nabble.com/file/n4727140/PahoMQTTWildcardTest.java> -- View this message in context: http://activemq.2283324.n4.nabble.com/ARTEMIS-java-lang-NullPointerException-switching-subscription-with-tp4726641p4727140.html Sent from the ActiveMQ - User mailing list archive at Nabble.com.