diff --git a/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/remoting/impl/netty/TransportConstants.java b/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/remoting/impl/netty/TransportConstants.java
index dfa2ce2599..14efb79011 100644
--- a/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/remoting/impl/netty/TransportConstants.java
+++ b/artemis-core-client/src/main/java/org/apache/activemq/artemis/core/remoting/impl/netty/TransportConstants.java
@@ -250,6 +250,7 @@ public class TransportConstants {
       allowableAcceptorKeys.add(TransportConstants.CONNECTIONS_ALLOWED);
       allowableAcceptorKeys.add(ActiveMQDefaultConfiguration.getPropMaskPassword());
       allowableAcceptorKeys.add(ActiveMQDefaultConfiguration.getPropPasswordCodec());
+      allowableAcceptorKeys.add(TransportConstants.BACKLOG_PROP_NAME);
 
       ALLOWABLE_ACCEPTOR_KEYS = Collections.unmodifiableSet(allowableAcceptorKeys);