diff --git a/src/main/java/de/avatic/lcc/config/SecurityConfig.java b/src/main/java/de/avatic/lcc/config/SecurityConfig.java
index 18575dd..4bcc3d2 100644
--- a/src/main/java/de/avatic/lcc/config/SecurityConfig.java
+++ b/src/main/java/de/avatic/lcc/config/SecurityConfig.java
@@ -292,7 +292,7 @@ public class SecurityConfig {
             }
 
             if (user != null) {
-                user.getGroups().forEach(g -> log.debug("Local group: {}", g));
+                user.getGroups().forEach(g -> log.debug("Local group: {}", g.getName()));
                 user.getGroups().forEach(group -> mappedAuthorities.add(new SimpleGrantedAuthority("ROLE_" + group.getName().toUpperCase())));
                 userId = user.getId();
             } else {