diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/SecurityAutoConfigurationTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/SecurityAutoConfigurationTests.java
index 3a9956ac26..b2055e3398 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/SecurityAutoConfigurationTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/SecurityAutoConfigurationTests.java
@@ -34,8 +34,6 @@ import org.springframework.boot.test.rule.OutputCapture;
 import org.springframework.boot.test.util.TestPropertyValues;
 import org.springframework.boot.web.servlet.DelegatingFilterProxyRegistrationBean;
 import org.springframework.boot.web.servlet.FilterRegistrationBean;
-import org.springframework.context.ApplicationEvent;
-import org.springframework.context.ApplicationListener;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
@@ -46,7 +44,6 @@ import org.springframework.security.authentication.AuthenticationProvider;
 import org.springframework.security.authentication.ProviderManager;
 import org.springframework.security.authentication.TestingAuthenticationProvider;
 import org.springframework.security.authentication.TestingAuthenticationToken;
-import org.springframework.security.authentication.event.AbstractAuthenticationEvent;
 import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
 import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
 import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
@@ -271,18 +268,6 @@ public class SecurityAutoConfigurationTests {
 				DispatcherType.ERROR);
 	}
 
-	private static final class AuthenticationListener
-			implements ApplicationListener<AbstractAuthenticationEvent> {
-
-		private ApplicationEvent event;
-
-		@Override
-		public void onApplicationEvent(AbstractAuthenticationEvent event) {
-			this.event = event;
-		}
-
-	}
-
 	@Configuration
 	@TestAutoConfigurationPackage(City.class)
 	protected static class EntityConfiguration {
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2WebSecurityConfigurationTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2WebSecurityConfigurationTests.java
index b027c3eb4b..5ed42ba67e 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2WebSecurityConfigurationTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/security/oauth2/client/OAuth2WebSecurityConfigurationTests.java
@@ -88,7 +88,7 @@ public class OAuth2WebSecurityConfigurationTests {
 				.run((context) -> assertThat(getAuthCodeFilters(context)).isEmpty());
 	}
 
-	@SuppressWarnings({ "unchecked", "cast" })
+	@SuppressWarnings("unchecked")
 	private List<Filter> getAuthCodeFilters(AssertableApplicationContext context) {
 		FilterChainProxy filterChain = (FilterChainProxy) context
 				.getBean("springSecurityFilterChain");