diff --git a/packages/reservation-platform/src/app/admin/charts/printer-idle.tsx b/packages/reservation-platform/src/app/admin/charts/printer-idle.tsx
index 9489222..1d90bb3 100644
--- a/packages/reservation-platform/src/app/admin/charts/printer-idle.tsx
+++ b/packages/reservation-platform/src/app/admin/charts/printer-idle.tsx
@@ -1,9 +1,8 @@
 "use client";
-import { Bar, BarChart, XAxis, YAxis } from "recharts";
+import { Bar, BarChart, CartesianGrid, XAxis, YAxis } from "recharts";
 
 import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from "@/components/ui/card";
 import { type ChartConfig, ChartContainer, ChartTooltip, ChartTooltipContent } from "@/components/ui/chart";
-import { StopwatchIcon } from "@radix-ui/react-icons";
 
 export const description = "Ein horizontales Balkendiagramm zur Darstellung der durchschnittlichen Leerlaufzeit";
 
@@ -37,9 +36,10 @@ export function PrinterIdleTimeChart({ printerIdleTime }: PrinterIdleTimeChartPr
 				<CardDescription>Durchschnittliche Leerlaufzeit der Drucker in Minuten</CardDescription>
 			</CardHeader>
 			<CardContent>
-				<ChartContainer className="h-64" config={chartConfig}>
+				<ChartContainer className="h-64 w-full" config={chartConfig}>
 					<BarChart accessibilityLayer data={chartData} layout="vertical">
-						<XAxis type="number" dataKey="idleTime" hide />
+						<CartesianGrid vertical={true} />
+						<XAxis type="number" dataKey="idleTime" label={"Minuten"} />
 						<YAxis
 							dataKey="printer"
 							type="category"
@@ -54,11 +54,8 @@ export function PrinterIdleTimeChart({ printerIdleTime }: PrinterIdleTimeChartPr
 				</ChartContainer>
 			</CardContent>
 			<CardFooter className="flex-col items-start gap-2 text-sm">
-				<div className="flex gap-2 font-medium leading-none">
-					Durchschnittliche Leerlaufzeiten der Drucker <StopwatchIcon className="h-4 w-4" />
-				</div>
 				<div className="leading-none text-muted-foreground">
-					Zeigt die durchschnittliche Leerlaufzeit für jeden Drucker
+					Zeigt die durchschnittliche Leerlaufzeit für jeden Drucker in Minuten
 				</div>
 			</CardFooter>
 		</Card>
diff --git a/packages/reservation-platform/src/app/admin/charts/printer-volume.tsx b/packages/reservation-platform/src/app/admin/charts/printer-volume.tsx
index 0248612..567c603 100644
--- a/packages/reservation-platform/src/app/admin/charts/printer-volume.tsx
+++ b/packages/reservation-platform/src/app/admin/charts/printer-volume.tsx
@@ -36,7 +36,7 @@ export function PrinterVolumeChart({ printerVolume }: PrinterVolumeChartProps) {
 				<CardDescription>Vergleich: Heute, Diese Woche, Diesen Monat</CardDescription>
 			</CardHeader>
 			<CardContent>
-				<ChartContainer className="h-64" config={chartConfig}>
+				<ChartContainer className="h-64 w-full" config={chartConfig}>
 					<BarChart
 						accessibilityLayer
 						data={chartData}
diff --git a/packages/reservation-platform/src/utils/analytics/.gitkeep b/packages/reservation-platform/src/utils/analytics/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/packages/reservation-platform/src/utils/analytics/idle-time.ts b/packages/reservation-platform/src/utils/analytics/idle-time.ts
index 0a9b71b..27193e8 100644
--- a/packages/reservation-platform/src/utils/analytics/idle-time.ts
+++ b/packages/reservation-platform/src/utils/analytics/idle-time.ts
@@ -22,7 +22,7 @@ export function calculatePrinterIdleTime(
 	const now = new Date();
 	const startOfThisMonth = startOfMonth(now);
 	const endOfThisMonth = endOfMonth(now);
-	const totalMinutesInMonth = (endOfThisMonth.getTime() - startOfThisMonth.getTime()) / (1000 * 60);
+	const totalMinutesInMonth = 60 * 70 * 4; // 60min * 70h (35*2) * 4 Weeks
 
 	const usedTimePerPrinter: Record<string, number> = pJobs.reduce(
 		(acc, job) => {