diff --git a/src/components/PoDetail/PoDetail.tsx b/src/components/PoDetail/PoDetail.tsx
index dc092e6..29b6424 100644
--- a/src/components/PoDetail/PoDetail.tsx
+++ b/src/components/PoDetail/PoDetail.tsx
@@ -331,8 +331,11 @@ const PoDetail: React.FC<Props> = ({ po, warehouse, printerCombo }) => {
 
   const labelPrinters = useMemo(() => {
     return (printerCombo ?? []).filter((p) => {
+      const typeText = String(p.type ?? "").trim().toLowerCase();
+      if (typeText === "label") return true;
+      // Backward compatibility for legacy rows without a reliable type value.
       const text = `${p.label ?? ""} ${p.name ?? ""} ${p.code ?? ""}`.toLowerCase();
-      return text.includes("label");
+      return text.includes("label") || text.includes("標籤");
     });
   }, [printerCombo]);
 
@@ -1090,7 +1093,7 @@ const PoDetail: React.FC<Props> = ({ po, warehouse, printerCombo }) => {
                         <Button
                           variant="contained"
                           onClick={openPrintDialog}
-                          disabled={(printerCombo?.length ?? 0) <= 0}
+                          disabled={labelPrinters.length <= 0}
                         >
                           選擇列印項目
                         </Button>