diff --git a/client/lib/screens/products/product_detail_screen.dart b/client/lib/screens/products/product_detail_screen.dart
index 18c1eac..bcf95e9 100644
--- a/client/lib/screens/products/product_detail_screen.dart
+++ b/client/lib/screens/products/product_detail_screen.dart
@@ -519,7 +519,9 @@ class _QRCodeDialogState extends ConsumerState<_QRCodeDialog> {
     _future = ref
         .read(productRepositoryProvider)
         .getQRCodeBytes(widget.productId)
-      ..then((b) => _bytes = b);
+      ..then((b) {
+        if (mounted) setState(() => _bytes = b);
+      });
   }
 
   Future<void> _print() async {