diff --git a/src/components/Charts/ChartCard/index.js b/src/components/Charts/ChartCard/index.js
index c7875b06..c3ee1865 100644
--- a/src/components/Charts/ChartCard/index.js
+++ b/src/components/Charts/ChartCard/index.js
@@ -7,7 +7,7 @@ import styles from './index.less';
 const renderTotal = total => {
   let totalDom;
   switch (typeof total) {
-    case undefined:
+    case 'undefined':
       totalDom = null;
       break;
     case 'function':