diff --git a/packages/Nicelizhi/Checkout/src/Resources/views/product-detail-checkoutv2.blade.php b/packages/Nicelizhi/Checkout/src/Resources/views/product-detail-checkoutv2.blade.php
index 2e554d61..0af97a1f 100644
--- a/packages/Nicelizhi/Checkout/src/Resources/views/product-detail-checkoutv2.blade.php
+++ b/packages/Nicelizhi/Checkout/src/Resources/views/product-detail-checkoutv2.blade.php
@@ -2779,7 +2779,7 @@ function gtag() {
           appleShow = true
         }
       }
-      if (data.ads.size.img = '') {
+      if (data.ads.size.img == '') {
         $('#size-chart').hide()
       } else {
         $('#size-chart').show()