diff --git a/src/views/chat/index.vue b/src/views/chat/index.vue
index 7790f43799..d2cd76aced 100644
--- a/src/views/chat/index.vue
+++ b/src/views/chat/index.vue
@@ -128,7 +128,7 @@ async function onConversation() {
               dataSources.value.length - 1,
               {
                 dateTime: new Date().toLocaleString(),
-                text: lastText + data.text ?? '',
+                text: lastText + (data.text ?? ''),
                 inversion: false,
                 error: false,
                 loading: true,