diff --git a/spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/ResponseEntityExceptionHandlerTests.java b/spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/ResponseEntityExceptionHandlerTests.java
index 777bfd7f931f..ab10e4ce6a6e 100644
--- a/spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/ResponseEntityExceptionHandlerTests.java
+++ b/spring-webflux/src/test/java/org/springframework/web/reactive/result/method/annotation/ResponseEntityExceptionHandlerTests.java
@@ -172,7 +172,7 @@ void customExceptionToProblemDetailViaMessageSource() {
 				.acceptLanguageAsLocales(locale).build());
 
 		ResponseEntity<?> responseEntity =
-				this.exceptionHandler.handleException(new IllegalStateException(), exchange).block();
+				this.exceptionHandler.handleException(new IllegalStateException("test"), exchange).block();
 
 		ProblemDetail body = (ProblemDetail) responseEntity.getBody();
 		assertThat(body.getDetail()).isEqualTo("Invalid state: A");