diff --git a/index.php b/index.php
index 392b677..7798a76 100644
--- a/index.php
+++ b/index.php
@@ -161,7 +161,7 @@ $packages_json = json_encode(array_map(function($package) {
                             <div class="day-number"><?= $date_display ?></div>
                             <div class="day-week">周<?= $weekday ?></div>
                             <div class="day-status"><?= $status_text ?></div>
-                            <?php if ($booking_schedule[$date]): ?>
+                            <?php if (isset($booking_schedule[$date]) && $booking_schedule[$date]): ?>
                                 <div class="booking-count"><?= $booking_count ?>个预约</div>
                             <?php endif; ?>
                         </div>