diff --git a/camisatoshi_wordpress_reports/controllers.py b/camisatoshi_wordpress_reports/controllers.py
index 7bc8a47..ec76bfc 100644
--- a/camisatoshi_wordpress_reports/controllers.py
+++ b/camisatoshi_wordpress_reports/controllers.py
@@ -96,12 +96,12 @@ def generate_um_report(start_date: str, end_date: str):
     #   - Add metadata entry: is_settled_with_um: 1
 
 
-def filter_orders_by_sku(orders: List[Dict], skus: List[str]) -> List[Dict]:
+def filter_orders_by_sku(orders: List[Order], skus: List[str]) -> List[Order]:
     filtered_orders = []
 
     for order in orders:
-        for item in order["line_items"]:
-            if item["sku"] in skus:
+        for sku in skus:
+            if order.contains_sku(sku):
                 filtered_orders.append(order)
 
     return filtered_orders
diff --git a/camisatoshi_wordpress_reports/order.py b/camisatoshi_wordpress_reports/order.py
index 18add68..6b9ba49 100644
--- a/camisatoshi_wordpress_reports/order.py
+++ b/camisatoshi_wordpress_reports/order.py
@@ -9,6 +9,12 @@ class Order:
     def __getitem__(self, item):
         return self.raw_data[item]
 
+    def contains_sku(self, sku: str) -> bool:
+        for item in self["line_items"]:
+            if item["sku"] == sku:
+                return True
+        return False
+
     @classmethod
     def from_api_response(cls, raw_data) -> "Order":
         return Order(raw_data)