diff --git a/config/src/test/java/org/springframework/security/config/annotation/method/configuration/PrePostMethodSecurityConfigurationTests.java b/config/src/test/java/org/springframework/security/config/annotation/method/configuration/PrePostMethodSecurityConfigurationTests.java
index 223fc3f8fc..b0fb127e88 100644
--- a/config/src/test/java/org/springframework/security/config/annotation/method/configuration/PrePostMethodSecurityConfigurationTests.java
+++ b/config/src/test/java/org/springframework/security/config/annotation/method/configuration/PrePostMethodSecurityConfigurationTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2024 the original author or authors.
+ * Copyright 2002-2025 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,6 +47,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 import org.springframework.context.annotation.Role;
+import org.springframework.core.annotation.AnnotationAwareOrderComparator;
 import org.springframework.core.annotation.AnnotationConfigurationException;
 import org.springframework.security.access.AccessDeniedException;
 import org.springframework.security.access.PermissionEvaluator;
@@ -1007,6 +1008,21 @@ public class PrePostMethodSecurityConfigurationTests {
 		assertThat(service.getIdPath("uid")).isEqualTo("uid");
 	}
 
+	// gh-16819
+	@Test
+	void autowireWhenDefaultsThenAdvisorAnnotationsAreSorted() {
+		this.spring.register(MethodSecurityServiceConfig.class).autowire();
+		AuthorizationAdvisorProxyFactory proxyFactory = this.spring.getContext()
+			.getBean(AuthorizationAdvisorProxyFactory.class);
+		AnnotationAwareOrderComparator comparator = AnnotationAwareOrderComparator.INSTANCE;
+		AuthorizationAdvisor previous = null;
+		for (AuthorizationAdvisor advisor : proxyFactory) {
+			boolean ordered = previous == null || comparator.compare(previous, advisor) < 0;
+			assertThat(ordered).isTrue();
+			previous = advisor;
+		}
+	}
+
 	private static Consumer<ConfigurableWebApplicationContext> disallowBeanOverriding() {
 		return (context) -> ((AnnotationConfigWebApplicationContext) context).setAllowBeanDefinitionOverriding(false);
 	}