diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/AbstractServletWebServerFactoryTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/AbstractServletWebServerFactoryTests.java
index 3033fc7718..c7098f14eb 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/AbstractServletWebServerFactoryTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/web/servlet/server/AbstractServletWebServerFactoryTests.java
@@ -878,7 +878,7 @@ public abstract class AbstractServletWebServerFactoryTests {
 	@Test
 	void malformedAddress() throws Exception {
 		AbstractServletWebServerFactory factory = getFactory();
-		factory.setAddress(InetAddress.getByName("123456"));
+		factory.setAddress(InetAddress.getByName("255.255.255.255"));
 		assertThatExceptionOfType(RuntimeException.class).isThrownBy(() -> {
 			this.webServer = factory.getWebServer();
 			this.webServer.start();