diff --git a/src/app/(main)/chart/delivery/page.tsx b/src/app/(main)/chart/delivery/page.tsx
index f3e93db..13ded24 100644
--- a/src/app/(main)/chart/delivery/page.tsx
+++ b/src/app/(main)/chart/delivery/page.tsx
@@ -363,7 +363,7 @@ export default function DeliveryChartPage() {
               options={{
                 chart: { type: "bar" },
                 xaxis: {
-                  categories: [...new Set(chartData.staffPerf.map((r) => r.date))].sort(),
+                  categories: Array.from(new Set(chartData.staffPerf.map((r) => r.date))).sort(),
                 },
                 yaxis: { title: { text: "單數" } },
                 plotOptions: { bar: { columnWidth: "60%", stacked: true } },
@@ -371,7 +371,7 @@ export default function DeliveryChartPage() {
                 legend: { position: "top" },
               }}
               series={(() => {
-                const staffNames = [...new Set(chartData.staffPerf.map((r) => r.staffName))].filter(Boolean).sort();
+                const staffNames = Array.from(new Set(chartData.staffPerf.map((r) => r.staffName))).filter(Boolean).sort();
                 const dates = Array.from(new Set(chartData.staffPerf.map((r) => r.date))).sort();
                 return staffNames.map((name) => ({
                   name: name || "Unknown",