diff --git a/examples/line/isoline/demo/ele_dark.js b/examples/line/isoline/demo/ele_dark.js
index 19ab5be243..cb575b888b 100644
--- a/examples/line/isoline/demo/ele_dark.js
+++ b/examples/line/isoline/demo/ele_dark.js
@@ -8,7 +8,7 @@ const scene = new Scene({
     style: 'dark',
     center: [ 102.597971, 23.110479 ],
     zoom: 13.34,
-    rotation: 360,
+    rotation: 360
   })
 });