diff --git a/5-network/11-websocket/article.md b/5-network/11-websocket/article.md
index 25aead5f35..268b674f0f 100644
--- a/5-network/11-websocket/article.md
+++ b/5-network/11-websocket/article.md
@@ -56,7 +56,7 @@ socket.onclose = function(event) {
 };
 
 socket.onerror = function(error) {
-  alert(`[error] ${error.message}`);
+  alert(`[error]`);
 };
 ```