diff --git a/broker/src/mqtt.rs b/broker/src/mqtt.rs
index d289af8..1a0c4c5 100644
--- a/broker/src/mqtt.rs
+++ b/broker/src/mqtt.rs
@@ -146,7 +146,7 @@ fn metrics_to_status(metrics: ConnectionMetrics, client_connected: bool) -> Opti
 
 fn config(settings: &Settings) -> Config {
     use librumqttd::rumqttlog::Config as RouterConfig;
-    use librumqttd::{ConnectionSettings, ConsoleSettings, ServerSettings};
+    use librumqttd::{ConnectionSettings, SphinxLoginCredentials, ConsoleSettings, ServerSettings};
     use std::collections::HashMap;
     use std::net::{Ipv4Addr, SocketAddrV4};
     use std::path::PathBuf;
@@ -173,7 +173,9 @@ fn config(settings: &Settings) -> Config {
                 max_inflight_count: 200,
                 max_inflight_size: 1024,
                 login_credentials: None,
-                sphinx_auth: true,
+                sphinx_auth: Some(SphinxLoginCredentials {
+                    within: None,
+                }),
             },
         },
     );