diff --git a/examples/gallery/animate/demo/animate_line.js b/examples/gallery/animate/demo/animate_line.js
index e0106eb0cd..a5731d98d9 100644
--- a/examples/gallery/animate/demo/animate_line.js
+++ b/examples/gallery/animate/demo/animate_line.js
@@ -24,7 +24,7 @@ fetch(
       .size(1.5)
       .shape('line')
       .color('color', v => {
-        return `rgb(${v[0]})`;
+        return `rgb(${v})`;
       })
       .animate({
         interval: 0.6,