diff --git a/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/JettyWebSocketSession.java b/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/JettyWebSocketSession.java
index 84f6d056ec5..ae6826eaace 100644
--- a/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/JettyWebSocketSession.java
+++ b/spring-webflux/src/main/java/org/springframework/web/reactive/socket/adapter/JettyWebSocketSession.java
@@ -149,7 +149,7 @@ public class JettyWebSocketSession extends AbstractWebSocketSession<Session> {
 		if (JettyWebSocketSession.this.handlerCompletionSink != null) {
 			JettyWebSocketSession.this.handlerCompletionSink.tryEmitError(error);
 		}
-		getDelegate().close(StatusCode.SERVER_ERROR, error.getMessage(), Callback.NOOP);
+		getDelegate().close(StatusCode.SERVER_ERROR, null, Callback.NOOP);
 	}
 
 	void onHandleComplete() {