diff --git a/src/components/Ellipsis/index.js b/src/components/Ellipsis/index.js
index f81bd6c3656c86d47ed5018b509f5a0c747502cb..3ddbc8e579a1f926bc89029e0a21433c37e77cb6 100644
--- a/src/components/Ellipsis/index.js
+++ b/src/components/Ellipsis/index.js
@@ -6,7 +6,7 @@ import styles from './index.less';
 /* eslint react/no-did-mount-set-state: 0 */
 /* eslint no-param-reassign: 0 */
 
-const isSupportLineClamp = !(document.body.style.webkitLineClamp !== undefined);
+const isSupportLineClamp = (document.body.style.webkitLineClamp !== undefined);
 
 const EllipsisText = ({ text, length, tooltip, ...other }) => {
   if (typeof text !== 'string') {