diff --git a/src/main/java/de/thm/arsnova/services/SessionService.java b/src/main/java/de/thm/arsnova/services/SessionService.java
index 755858ef493c0a88b701c73637e1000068ccbe60..81cee4ce86ea7002db21d31c2dd090fa10b7fdee 100644
--- a/src/main/java/de/thm/arsnova/services/SessionService.java
+++ b/src/main/java/de/thm/arsnova/services/SessionService.java
@@ -199,7 +199,6 @@ public class SessionService implements ISessionService {
 	}
 
 	@Override
-	@PreAuthorize("isAuthenticated()")
 	public final LoggedIn registerAsOnlineUser(final String sessionkey) {
 		/* HTTP polling solution (legacy) */