diff --git a/apps/client/src/app/components/benchmark-comparator/benchmark-comparator.component.ts b/apps/client/src/app/components/benchmark-comparator/benchmark-comparator.component.ts
index 98980bbdf..dd52fbcfd 100644
--- a/apps/client/src/app/components/benchmark-comparator/benchmark-comparator.component.ts
+++ b/apps/client/src/app/components/benchmark-comparator/benchmark-comparator.component.ts
@@ -27,6 +27,7 @@ import { ColorScheme } from '@ghostfolio/common/types';
 import { SymbolProfile } from '@prisma/client';
 import {
   Chart,
+  ChartData,
   LineController,
   LineElement,
   LinearScale,
@@ -89,14 +90,14 @@ export class BenchmarkComparatorComponent implements OnChanges, OnDestroy {
   }
 
   private initialize() {
-    const data = {
+    const data: ChartData<'line'> = {
       datasets: [
         {
           backgroundColor: `rgb(${primaryColorRgb.r}, ${primaryColorRgb.g}, ${primaryColorRgb.b})`,
           borderColor: `rgb(${primaryColorRgb.r}, ${primaryColorRgb.g}, ${primaryColorRgb.b})`,
           borderWidth: 2,
           data: this.performanceDataItems.map(({ date, value }) => {
-            return { x: parseDate(date), y: value };
+            return { x: parseDate(date).getTime(), y: value };
           }),
           label: $localize`Portfolio`
         },
@@ -105,7 +106,7 @@ export class BenchmarkComparatorComponent implements OnChanges, OnDestroy {
           borderColor: `rgb(${secondaryColorRgb.r}, ${secondaryColorRgb.g}, ${secondaryColorRgb.b})`,
           borderWidth: 2,
           data: this.benchmarkDataItems.map(({ date, value }) => {
-            return { x: parseDate(date), y: value };
+            return { x: parseDate(date).getTime(), y: value };
           }),
           label: $localize`Benchmark`
         }
diff --git a/apps/client/src/app/components/investment-chart/investment-chart.component.ts b/apps/client/src/app/components/investment-chart/investment-chart.component.ts
index 72d56441a..6f27bceb4 100644
--- a/apps/client/src/app/components/investment-chart/investment-chart.component.ts
+++ b/apps/client/src/app/components/investment-chart/investment-chart.component.ts
@@ -29,6 +29,7 @@ import {
   BarController,
   BarElement,
   Chart,
+  ChartData,
   LineController,
   LineElement,
   LinearScale,
@@ -142,7 +143,7 @@ export class InvestmentChartComponent implements OnChanges, OnDestroy {
       });
     }
 
-    const chartData = {
+    const chartData: ChartData<'line'> = {
       labels: this.historicalDataItems.map(({ date }) => {
         return parseDate(date);
       }),
@@ -153,7 +154,7 @@ export class InvestmentChartComponent implements OnChanges, OnDestroy {
           borderWidth: this.groupBy ? 0 : 1,
           data: this.investments.map(({ date, investment }) => {
             return {
-              x: parseDate(date),
+              x: parseDate(date).getTime(),
               y: this.isInPercent ? investment * 100 : investment
             };
           }),
@@ -173,7 +174,7 @@ export class InvestmentChartComponent implements OnChanges, OnDestroy {
           borderWidth: 2,
           data: this.values.map(({ date, value }) => {
             return {
-              x: parseDate(date),
+              x: parseDate(date).getTime(),
               y: this.isInPercent ? value * 100 : value
             };
           }),