diff --git a/libs/ui/src/lib/line-chart/line-chart.component.ts b/libs/ui/src/lib/line-chart/line-chart.component.ts
index 45ff88e339..782d987856 100644
--- a/libs/ui/src/lib/line-chart/line-chart.component.ts
+++ b/libs/ui/src/lib/line-chart/line-chart.component.ts
@@ -168,7 +168,7 @@ export class GfLineChartComponent
       gradient.addColorStop(1, getBackgroundColor(this.colorScheme));
     }
 
-    const data: ChartData<'line', (number | null)[]> = {
+    const data: ChartData<'line'> = {
       labels,
       datasets: [
         {