diff --git a/uc_node_checkout.module b/uc_node_checkout.module
index 8785a0f..9d5e20d 100644
--- a/uc_node_checkout.module
+++ b/uc_node_checkout.module
@@ -799,26 +799,28 @@ function uc_node_checkout_cart_item($op, &$item) {
       break;
 
     case 'can_ship':
-      // Determine if there is a shippable component to this node checkout product
-      // We will look at the default $item settings to determine.
-      if ($uc_node_checkout_product = node_load($item->data['nid'])) {
-        // If the item was set to be 'shippable' on the node edit form of the uc_node_checkout product,
-        // not the associated node to purchase, then we'll send this off to ubercart as a 'shippable' item
-        // and Ubercart will use this is a trigger to display the shipping pane. Else, if set to unshippable
-        // Ubercart will not trigger the shipping pane, provided there are no other shippable products
-        // in the cart with the uc_node_checkout items.
-        if ($uc_node_checkout_product->shippable == 0) {
-          // If this, then the product was set to 'not shippable'
-          return FALSE;
+     if (isset($item->data['node_checkout_nid'])) {
+        // Determine if there is a shippable component to this node checkout product
+        // We will look at the default $item settings to determine.
+        if ($uc_node_checkout_product = node_load($item->data['nid'])) {
+          // If the item was set to be 'shippable' on the node edit form of the uc_node_checkout product,
+          // not the associated node to purchase, then we'll send this off to ubercart as a 'shippable' item
+          // and Ubercart will use this is a trigger to display the shipping pane. Else, if set to unshippable
+          // Ubercart will not trigger the shipping pane, provided there are no other shippable products
+          // in the cart with the uc_node_checkout items.
+          if ($uc_node_checkout_product->shippable == 0) {
+            // If this, then the product was set to 'not shippable'
+            return FALSE;
+          }
+          else {
+            return TRUE;
+          }
         }
         else {
-          return TRUE;
+          // $item->data['nid'] was not found or unable to node_load $item->data['nid']'s nid. So show an error:
+          drupal_set_message(t('Unable to determine the product class associated with item ' . $item->data['title'] . ' so the shipping pane is included on this Ubercart display'), 'error');
         }
       }
-      else {
-        // $item->data['nid'] was not found or unable to node_load $item->data['nid']'s nid. So show an error:
-        drupal_set_message(t('Unable to determine the product class associated with item ' . $item->data['title'] . ' so the shipping pane is included on this Ubercart display'), 'error');
-      }
       break;
   }
 }