diff --git a/integration/tomcat/tomcat-core/src/main/java/org/keycloak/adapters/tomcat/CatalinaUserSessionManagement.java b/integration/tomcat/tomcat-core/src/main/java/org/keycloak/adapters/tomcat/CatalinaUserSessionManagement.java
index b0e6cae..2b302fc 100755
--- a/integration/tomcat/tomcat-core/src/main/java/org/keycloak/adapters/tomcat/CatalinaUserSessionManagement.java
+++ b/integration/tomcat/tomcat-core/src/main/java/org/keycloak/adapters/tomcat/CatalinaUserSessionManagement.java
@@ -56,7 +56,7 @@ public class CatalinaUserSessionManagement implements SessionListener {
try {
session.expire();
} catch (Exception e) {
- log.warnf("Session not present or already invalidated.");
+ log.warn("Session not present or already invalidated.", e);
}
}