diff --git a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfiguration.java b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfiguration.java
index 923dd3eea..d181a9392 100644
--- a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfiguration.java
+++ b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebAsyncClientAutoConfiguration.java
@@ -51,6 +51,7 @@ import org.springframework.web.client.AsyncRestTemplate;
 @AutoConfigureAfter(TraceWebServletAutoConfiguration.class)
 public class TraceWebAsyncClientAutoConfiguration {
 
+	@Configuration
 	@ConditionalOnBean(AsyncRestTemplate.class)
 	static class AsyncRestTemplateConfig {
 
diff --git a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebClientAutoConfiguration.java b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebClientAutoConfiguration.java
index 04507b6df..54cd2dd70 100644
--- a/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebClientAutoConfiguration.java
+++ b/spring-cloud-sleuth-core/src/main/java/org/springframework/cloud/sleuth/instrument/web/client/TraceWebClientAutoConfiguration.java
@@ -148,6 +148,7 @@ public class TraceWebClientAutoConfiguration {
 		}
 	}
 
+	@Configuration
 	@ConditionalOnClass(WebClient.class)
 	static class WebClientConfig {