diff --git a/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeAuthenticationProviderBeanManagerConfigurer.java b/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeAuthenticationProviderBeanManagerConfigurer.java
index bcf11899027..82bd70469fd 100644
--- a/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeAuthenticationProviderBeanManagerConfigurer.java
+++ b/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeAuthenticationProviderBeanManagerConfigurer.java
@@ -94,7 +94,7 @@ private <T> List<BeanWithName<T>> getBeansWithName(Class<T> type) {
 			String[] beanNames = InitializeAuthenticationProviderBeanManagerConfigurer.this.context
 				.getBeanNamesForType(type);
 			for (String beanName : beanNames) {
-				T bean = InitializeAuthenticationProviderBeanManagerConfigurer.this.context.getBean(beanNames[0], type);
+				T bean = InitializeAuthenticationProviderBeanManagerConfigurer.this.context.getBean(beanName, type);
 				beanWithNames.add(new BeanWithName<T>(bean, beanName));
 			}
 			return beanWithNames;
diff --git a/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeUserDetailsBeanManagerConfigurer.java b/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeUserDetailsBeanManagerConfigurer.java
index 7af1f4b0c57..3383a5f20fa 100644
--- a/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeUserDetailsBeanManagerConfigurer.java
+++ b/config/src/main/java/org/springframework/security/config/annotation/authentication/configuration/InitializeUserDetailsBeanManagerConfigurer.java
@@ -135,7 +135,7 @@ private <T> List<BeanWithName<T>> getBeansWithName(Class<T> type) {
 			List<BeanWithName<T>> beanWithNames = new ArrayList<>();
 			String[] beanNames = InitializeUserDetailsBeanManagerConfigurer.this.context.getBeanNamesForType(type);
 			for (String beanName : beanNames) {
-				T bean = InitializeUserDetailsBeanManagerConfigurer.this.context.getBean(beanNames[0], type);
+				T bean = InitializeUserDetailsBeanManagerConfigurer.this.context.getBean(beanName, type);
 				beanWithNames.add(new BeanWithName<T>(bean, beanName));
 			}
 			return beanWithNames;