diff --git a/src/lib/server/quote-pdf-service.ts b/src/lib/server/quote-pdf-service.ts
index ee927fd..2b7b8ed 100644
--- a/src/lib/server/quote-pdf-service.ts
+++ b/src/lib/server/quote-pdf-service.ts
@@ -484,5 +484,9 @@ export async function isQuotePdfStale(quoteId: string): Promise<boolean> {
   // matches chronological compare for ISO 8601 with consistent
   // timezone offsets, which PB always emits (UTC, no fractional
   // seconds). `String(a) > String(b)` is sufficient.
-  return itemAt > pdfAt || quoteAt > pdfAt;
+  //
+  // `itemAt` is undefined when the quote has no active items left
+  // (all moved/removed) — that alone doesn't make the PDF stale, so
+  // only the quote-level timestamp decides in that case.
+  return (itemAt !== undefined && itemAt > pdfAt) || quoteAt > pdfAt;
 }