diff --git a/src/views/Discover/Performance/index.vue b/src/views/Discover/Performance/index.vue
index 416539d..a717a81 100644
--- a/src/views/Discover/Performance/index.vue
+++ b/src/views/Discover/Performance/index.vue
@@ -182,6 +182,7 @@ export default {
           legend: false, // 圖例
           tooltip: {
             displayColors: false,
+            titleFont: {weight: 'normal'},
             callbacks: {
               title: function(context) {
                 return `Date: ${getMoment(context[0].parsed.x)}`;
@@ -305,6 +306,7 @@ export default {
           legend: false, // 圖例
           tooltip: {
             displayColors: false,
+            titleFont: {weight: 'normal'},
             callbacks: {
               title: function(context) {
                 return `Date: ${context[0].label}`;
@@ -419,6 +421,7 @@ export default {
           legend: false, // 圖例
           tooltip: {
             displayColors: false,
+            titleFont: {weight: 'normal'},
             callbacks: {
               title: function(context) {
                 // return `Activity: ${context[0].label}`;