diff --git a/core/core-frontend/src/views/chart/components/js/panel/charts/g2/table/t-heatmap.ts b/core/core-frontend/src/views/chart/components/js/panel/charts/g2/table/t-heatmap.ts
index 2a5b8ab6fb..8e231d84fd 100644
--- a/core/core-frontend/src/views/chart/components/js/panel/charts/g2/table/t-heatmap.ts
+++ b/core/core-frontend/src/views/chart/components/js/panel/charts/g2/table/t-heatmap.ts
@@ -258,6 +258,7 @@ export class TableG2Chart extends G2ChartView {
       const quotaLegendOption = {
         scale: {
           color: {
+            type: 'linear',
             interpolate: () => {
               return c => colors[Math.floor(c * (colors.length - 1))]
             }