diff --git a/public/dashboard/index.html b/public/dashboard/index.html
index d68466d..605bfda 100644
--- a/public/dashboard/index.html
+++ b/public/dashboard/index.html
@@ -514,6 +514,7 @@
                 var option4;
 
                 option4 = {
+                    tooltip:{},
                     color: ['#018fff'],
                     lineStyle: {
                         color: '#018fff'