diff --git a/src/main/java/de/thm/arsnova/entities/VisitedSession.java b/src/main/java/de/thm/arsnova/entities/VisitedSession.java
index 06569a43cf50e546866a3b23bc452ff1a8dfca8e..bc40b8117e142800618113c65814d855f4fd807a 100644
--- a/src/main/java/de/thm/arsnova/entities/VisitedSession.java
+++ b/src/main/java/de/thm/arsnova/entities/VisitedSession.java
@@ -18,6 +18,7 @@
  */
 package de.thm.arsnova.entities;
 
+
 public class VisitedSession {
 	private String _id;
 	private String name;
diff --git a/src/main/java/de/thm/arsnova/services/SessionService.java b/src/main/java/de/thm/arsnova/services/SessionService.java
index c25b5d64bea043dc61ab53a4374c5571f2216bad..22a425479e61ab8b2d21a3d80292a31940305f58 100644
--- a/src/main/java/de/thm/arsnova/services/SessionService.java
+++ b/src/main/java/de/thm/arsnova/services/SessionService.java
@@ -34,7 +34,6 @@ import org.springframework.stereotype.Service;
 
 import de.thm.arsnova.connector.client.ConnectorClient;
 import de.thm.arsnova.connector.model.Course;
-import de.thm.arsnova.connector.model.Courses;
 import de.thm.arsnova.dao.IDatabaseDao;
 import de.thm.arsnova.entities.Question;
 import de.thm.arsnova.entities.Session;
@@ -265,6 +264,7 @@ public class SessionService implements ISessionService {
 		if (!session.isCreator(user)) {
 			throw new ForbiddenException();
 		}
+		socketIoServer.reportSessionStatus(sessionkey, lock);
 		return databaseDao.lockSession(session, lock);
 	}
 
diff --git a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
index 262a3ab9ce61e598ca39e0b43cb8359fbc7b401d..827d14de61a5c3eca75eaf07fb43496c30a57a78 100644
--- a/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
+++ b/src/main/java/de/thm/arsnova/socket/ARSnovaSocketIOServer.java
@@ -316,6 +316,10 @@ public class ARSnovaSocketIOServer {
 		broadcastInSession(sessionKey, "lecQuestionAvail", lecturerQuestionId);
 	}
 
+	public void reportSessionStatus(final String sessionKey, final boolean active) {
+		broadcastInSession(sessionKey, "setSessionActive", active);
+	}
+
 	public void broadcastInSession(final String sessionKey, final String eventName, final Object data) {
 		/**
 		 * collect a list of users which are in the current session iterate over