diff --git a/skill-tree/src/main/java/com/RDS/skilltree/Config/SecurityConfig.java b/skill-tree/src/main/java/com/RDS/skilltree/Config/SecurityConfig.java
index 46f15a73..7f63eda0 100644
--- a/skill-tree/src/main/java/com/RDS/skilltree/Config/SecurityConfig.java
+++ b/skill-tree/src/main/java/com/RDS/skilltree/Config/SecurityConfig.java
@@ -32,7 +32,9 @@ public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
                 .authorizeHttpRequests(auth->auth
                         .requestMatchers("/**").authenticated())
                 .exceptionHandling(ex->ex.authenticationEntryPoint(authEntryPoint))
-                .sessionManagement(session -> session.maximumSessions(1));
+                .sessionManagement(session -> session.maximumSessions(1).maxSessionsPreventsLogin(true)
+                );
+//        https://docs.spring.io/spring-security/reference/servlet/authentication/session-management.html#ns-concurrent-sessions
 
         http.addFilterBefore(jwtAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class);
         return http.build();