diff --git a/main/manager-web/src/components/ChatHistoryDialog.vue b/main/manager-web/src/components/ChatHistoryDialog.vue
index 3dc3126f..1ff8fff3 100644
--- a/main/manager-web/src/components/ChatHistoryDialog.vue
+++ b/main/manager-web/src/components/ChatHistoryDialog.vue
@@ -426,7 +426,7 @@ export default {
 }
 
 .session-info {
-    flex: 1;
+    width: calc(100% - 50px);
 }
 
 .session-time {