diff --git a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
index 5eae72128b538c447efd708ce032dcfbffabd575..07460db4e7cdd6037277e84c49df6da0fbe60e55 100644
--- a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
+++ b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
@@ -66,6 +66,7 @@ public class ARSnovaSocketIOServer {
 	
 	@PreDestroy
 	public void closeAllSessions() {
+		LOGGER.info("Close all websockets due to @PreDestroy");
 		for (SocketIOClient c : server.getAllClients()) {
 			c.disconnect();
 		}