diff --git a/packages/app/src/components/DBHeatmapChart.tsx b/packages/app/src/components/DBHeatmapChart.tsx
index c4009144fe..e69e5ed673 100644
--- a/packages/app/src/components/DBHeatmapChart.tsx
+++ b/packages/app/src/components/DBHeatmapChart.tsx
@@ -286,7 +286,7 @@ function buildSeriesForPalette(colors: string[]): Partial<uPlot.Series> {
   };
 }
 
-export type HeatmapChartConfig = {
+type HeatmapChartConfig = {
   displayType: DisplayType.Heatmap;
   select: [
     {