diff -u b/src/Plugin/migrate/source/ubercart/d6/Order.php b/src/Plugin/migrate/source/ubercart/d6/Order.php
--- b/src/Plugin/migrate/source/ubercart/d6/Order.php
+++ b/src/Plugin/migrate/source/ubercart/d6/Order.php
@@ -86,6 +86,7 @@
 
     $row->setSourceProperty('commerce_shipping', $this->moduleHandler->moduleExists('commerce_shipping'));
     $row->setSourceProperty('adjustments', $this->getAdjustmentData($row));
+    $row->setSourceProperty('currency', $this->getUbercartCurrency());
     return parent::prepareRow($row);
   }
 
@@ -102,7 +103,7 @@
     $order_id = $row->getSourceProperty('order_id');
     $query = $this->select('uc_order_line_items', 'uol')
       ->fields('uol')
-      ->fields('uo', ['order_id', 'currency'])
+      ->fields('uo', ['order_id'])
       ->orderBy('weight', 'ASC')
       ->condition('uol.order_id', $order_id);
     $query->innerJoin('uc_orders', 'uo', 'uol.order_id = uo.order_id');
@@ -123,2 +124,17 @@
 
+  /**
+   * Gets the Ubercart global currency.
+   *
+   * @return string
+   *   The currency.
+   */
+  public function getUbercartCurrency() {
+    static $currency;
+
+    if (empty($currency)) {
+      $currency = $this->variableGet('uc_currency_code', 'USD');
+    }
+    return $currency;
+  }
+
 }