diff --git a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/test/WebEndpointTestInvocationContextProvider.java b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/test/WebEndpointTestInvocationContextProvider.java
index 41bf39c07f..68c8e401ed 100644
--- a/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/test/WebEndpointTestInvocationContextProvider.java
+++ b/spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/endpoint/web/test/WebEndpointTestInvocationContextProvider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2020 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -192,7 +192,8 @@ class WebEndpointTestInvocationContextProvider implements TestTemplateInvocation
 			DefaultUriBuilderFactory uriBuilderFactory = new DefaultUriBuilderFactory(
 					"http://localhost:" + determinePort());
 			uriBuilderFactory.setEncodingMode(EncodingMode.NONE);
-			return WebTestClient.bindToServer().uriBuilderFactory(uriBuilderFactory).responseTimeout(TIMEOUT).build();
+			return WebTestClient.bindToServer().uriBuilderFactory(uriBuilderFactory).responseTimeout(TIMEOUT)
+					.codecs((codecs) -> codecs.defaultCodecs().maxInMemorySize(-1)).build();
 		}
 
 		private int determinePort() {