diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java
index f1684617ea..14b8521d85 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/embedded/TomcatWebServerFactoryCustomizerTests.java
@@ -367,8 +367,7 @@ class TomcatWebServerFactoryCustomizerTests {
 	}
 
 	@Test
-	@Deprecated
-	@SuppressWarnings("deprecation")
+	@Deprecated(since = "2.7.12", forRemoval = true)
 	void testCustomizeRejectIllegalHeader() {
 		bind("server.tomcat.reject-illegal-header=false");
 		customizeAndRunServer((server) -> assertThat(