diff --git a/packages/layers/src/line/models/line.ts b/packages/layers/src/line/models/line.ts
index d7504b5dca..1f2e65ccfe 100644
--- a/packages/layers/src/line/models/line.ts
+++ b/packages/layers/src/line/models/line.ts
@@ -104,7 +104,7 @@ export default class LineModel extends BaseModel {
       u_targetColor: targetColorArr,
 
       // 顶点高度 scale
-      u_vertexScale: vertexHeightScale
+      u_vertexScale: vertexHeightScale,
     };
   }
   public getAnimateUniforms(): IModelUniform {
diff --git a/stories/Map/components/amap2demo_lineHeight.tsx b/stories/Map/components/amap2demo_lineHeight.tsx
index 3eff5175f9..7627438aea 100644
--- a/stories/Map/components/amap2demo_lineHeight.tsx
+++ b/stories/Map/components/amap2demo_lineHeight.tsx
@@ -34,7 +34,7 @@ export default class Amap2demo_lineHeight extends React.Component {
             .size(1)
             .shape('line')
             .style({
-              vertexHeightScale: 30
+              vertexHeightScale: 30,
             })
             .color('#ccc');