diff --git a/config/src/main/java/org/springframework/security/config/authentication/AuthenticationManagerFactoryBean.java b/config/src/main/java/org/springframework/security/config/authentication/AuthenticationManagerFactoryBean.java
index 5abadc5c16..337fc081f7 100644
--- a/config/src/main/java/org/springframework/security/config/authentication/AuthenticationManagerFactoryBean.java
+++ b/config/src/main/java/org/springframework/security/config/authentication/AuthenticationManagerFactoryBean.java
@@ -26,7 +26,6 @@ import org.springframework.beans.factory.BeanFactoryAware;
 import org.springframework.beans.factory.FactoryBean;
 import org.springframework.beans.factory.NoSuchBeanDefinitionException;
 import org.springframework.security.authentication.AuthenticationManager;
-import org.springframework.security.authentication.AuthenticationProvider;
 import org.springframework.security.authentication.ObservationAuthenticationManager;
 import org.springframework.security.authentication.ProviderManager;
 import org.springframework.security.authentication.dao.DaoAuthenticationProvider;