diff --git a/web/src/main/java/org/springframework/security/web/DefaultSecurityFilterChain.java b/web/src/main/java/org/springframework/security/web/DefaultSecurityFilterChain.java
index e643d77350..7117a7d1c7 100644
--- a/web/src/main/java/org/springframework/security/web/DefaultSecurityFilterChain.java
+++ b/web/src/main/java/org/springframework/security/web/DefaultSecurityFilterChain.java
@@ -24,7 +24,6 @@
 import jakarta.servlet.http.HttpServletRequest;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
-import reactor.util.annotation.NonNull;
 
 import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.BeanFactory;
@@ -33,6 +32,7 @@
 import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
 import org.springframework.core.log.LogMessage;
+import org.springframework.lang.NonNull;
 import org.springframework.security.web.util.matcher.RequestMatcher;
 import org.springframework.util.StringUtils;