diff --git a/src/main/java/de/thm/arsnova/config/SecurityConfig.java b/src/main/java/de/thm/arsnova/config/SecurityConfig.java
index 094dbcbeb3bd5fd628f351a49c62632869c99330..2caf9841a1c1dcc0759b505260cdc7f19ffe566e 100644
--- a/src/main/java/de/thm/arsnova/config/SecurityConfig.java
+++ b/src/main/java/de/thm/arsnova/config/SecurityConfig.java
@@ -63,8 +63,8 @@ import org.springframework.security.ldap.DefaultSpringSecurityContextSource;
 import org.springframework.security.ldap.authentication.BindAuthenticator;
 import org.springframework.security.ldap.authentication.LdapAuthenticationProvider;
 import org.springframework.security.ldap.authentication.LdapAuthenticator;
+import org.springframework.security.ldap.authentication.NullLdapAuthoritiesPopulator;
 import org.springframework.security.ldap.search.FilterBasedLdapUserSearch;
-import org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator;
 import org.springframework.security.ldap.userdetails.LdapAuthoritiesPopulator;
 import org.springframework.security.ldap.userdetails.LdapUserDetailsMapper;
 import org.springframework.security.web.AuthenticationEntryPoint;
@@ -288,7 +288,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter implements Serv
 
 	@Bean
 	public LdapAuthoritiesPopulator ldapAuthoritiesPopulator() throws Exception {
-		return new DefaultLdapAuthoritiesPopulator(ldapContextSource(), null);
+		return new NullLdapAuthoritiesPopulator();
 	}
 
 	@Bean