diff --git a/module/spring-boot-webtestclient/src/main/java/org/springframework/boot/webtestclient/autoconfigure/AutoConfigureWebTestClient.java b/module/spring-boot-webtestclient/src/main/java/org/springframework/boot/webtestclient/autoconfigure/AutoConfigureWebTestClient.java
index eef6aa7467c..1f05509822f 100644
--- a/module/spring-boot-webtestclient/src/main/java/org/springframework/boot/webtestclient/autoconfigure/AutoConfigureWebTestClient.java
+++ b/module/spring-boot-webtestclient/src/main/java/org/springframework/boot/webtestclient/autoconfigure/AutoConfigureWebTestClient.java
@@ -26,12 +26,14 @@ import java.time.Duration;
 
 import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
 import org.springframework.boot.test.context.PropertyMapping;
+import org.springframework.boot.test.context.PropertyMapping.Skip;
 import org.springframework.test.web.reactive.server.WebTestClient;
 
 /**
  * Annotation that can be applied to a test class to enable a {@link WebTestClient}.
  *
  * @author Stephane Nicoll
+ * @author Jay Choi
  * @since 4.0.0
  * @see WebTestClientAutoConfiguration
  */
@@ -48,6 +50,7 @@ public @interface AutoConfigureWebTestClient {
 	 * {@link Duration#parse(CharSequence)}).
 	 * @return the web client timeout
 	 */
+	@PropertyMapping(skip = Skip.ON_DEFAULT_VALUE)
 	String timeout() default "";
 
 }
diff --git a/module/spring-boot-webtestclient/src/test/java/org/springframework/boot/webtestclient/autoconfigure/WebTestClientTimeoutSpringBootTestIntegrationTests.java b/module/spring-boot-webtestclient/src/test/java/org/springframework/boot/webtestclient/autoconfigure/WebTestClientTimeoutSpringBootTestIntegrationTests.java
new file mode 100644
index 00000000000..d1a3588de0a
--- /dev/null
+++ b/module/spring-boot-webtestclient/src/test/java/org/springframework/boot/webtestclient/autoconfigure/WebTestClientTimeoutSpringBootTestIntegrationTests.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2012-present 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.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.webtestclient.autoconfigure;
+
+import java.time.Duration;
+
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.web.reactive.server.WebTestClient;
+import org.springframework.web.reactive.config.EnableWebFlux;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link SpringBootTest @SpringBootTest} with
+ * {@link AutoConfigureWebTestClient @AutoConfigureWebTestClient} timeout property
+ * binding.
+ *
+ * @author Jay Choi
+ * @author Andy Wilkinson
+ */
+@SpringBootTest(properties = { "spring.main.web-application-type=reactive" },
+		classes = ExampleWebTestClientApplication.class)
+class WebTestClientTimeoutSpringBootTestIntegrationTests {
+
+	@Nested
+	@EnableWebFlux
+	@AutoConfigureWebTestClient
+	@TestPropertySource(properties = "spring.test.webtestclient.timeout=30s")
+	class TimeoutFromProperty {
+
+		@Autowired
+		private WebTestClient webClient;
+
+		@Test
+		void timeoutIsApplied() {
+			assertThat(this.webClient).hasFieldOrPropertyWithValue("responseTimeout", Duration.ofSeconds(30));
+		}
+
+	}
+
+	@Nested
+	@EnableWebFlux
+	@AutoConfigureWebTestClient(timeout = "25s")
+	class TimeoutFromAnnotation {
+
+		@Autowired
+		private WebTestClient webClient;
+
+		@Test
+		void timeoutIsApplied() {
+			assertThat(this.webClient).hasFieldOrPropertyWithValue("responseTimeout", Duration.ofSeconds(25));
+		}
+
+	}
+
+	@Nested
+	@EnableWebFlux
+	@AutoConfigureWebTestClient
+	class DefaultTimeout {
+
+		@Autowired
+		private WebTestClient webClient;
+
+		@Test
+		void timeoutIsApplied() {
+			assertThat(this.webClient).hasFieldOrPropertyWithValue("responseTimeout", Duration.ofSeconds(5));
+		}
+
+	}
+
+}