diff --git a/src/main/java/org/softwarefactory/keycloak/providers/events/mqtt/MQTTEventListenerProvider.java b/src/main/java/org/softwarefactory/keycloak/providers/events/mqtt/MQTTEventListenerProvider.java
index e27ede8..a11d574 100644
--- a/src/main/java/org/softwarefactory/keycloak/providers/events/mqtt/MQTTEventListenerProvider.java
+++ b/src/main/java/org/softwarefactory/keycloak/providers/events/mqtt/MQTTEventListenerProvider.java
@@ -87,7 +87,7 @@ private void sendMqttMessage(String event) {
             client.publish(configuration.topic, payload);
             client.disconnect();
         } catch (Exception e) {
-            logger.log(Level.SEVERE, "Event: {0}", e.getStackTrace());
+            logger.log(Level.SEVERE, "Publishing failed!", e);
         }
     }