diff --git a/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/oauth2/resource/OAuth2ResourceServerConfiguration.java b/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/oauth2/resource/OAuth2ResourceServerConfiguration.java
index 8e8414ee0e6..97b0b4f4606 100644
--- a/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/oauth2/resource/OAuth2ResourceServerConfiguration.java
+++ b/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/security/oauth2/resource/OAuth2ResourceServerConfiguration.java
@@ -106,7 +106,7 @@ public class OAuth2ResourceServerConfiguration {
 
 	}
 
-	private static class ResourceServerFilterChainOrderProcessor
+	private static final class ResourceServerFilterChainOrderProcessor
 			implements BeanPostProcessor {
 
 		private final ResourceServerProperties properties;