diff --git a/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/actuate/GatewayControllerEndpoint.java b/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/actuate/GatewayControllerEndpoint.java
index 52421b1f..b27cfd63 100644
--- a/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/actuate/GatewayControllerEndpoint.java
+++ b/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/actuate/GatewayControllerEndpoint.java
@@ -182,7 +182,7 @@ http POST :8080/admin/gateway/routes/apiaddreqhead uri=http://httpbin.org:80 pre
 		return this.routeDefinitionLocator.getRouteDefinitions()
 				.filter(route -> route.getId().equals(id))
 				.singleOrEmpty()
-				.map(route -> ResponseEntity.ok(route))
+				.map(ResponseEntity::ok)
 				.switchIfEmpty(Mono.just(ResponseEntity.notFound().build()));
 	}
 
diff --git a/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/CachingRouteDefinitionLocator.java b/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/CachingRouteDefinitionLocator.java
index 62091d2a..71989463 100644
--- a/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/CachingRouteDefinitionLocator.java
+++ b/spring-cloud-gateway-core/src/main/java/org/springframework/cloud/gateway/route/CachingRouteDefinitionLocator.java
@@ -39,7 +39,7 @@ public class CachingRouteDefinitionLocator implements RouteDefinitionLocator {
 	public CachingRouteDefinitionLocator(RouteDefinitionLocator delegate) {
 		this.delegate = delegate;
 		routeDefinitions = CacheFlux.lookup(cache, "routeDefs", RouteDefinition.class)
-				.onCacheMissResume(() -> this.delegate.getRouteDefinitions());
+				.onCacheMissResume(this.delegate::getRouteDefinitions);
 
 	}