diff --git a/InvenTree/order/views.py b/InvenTree/order/views.py
index 9aa9b8d473..5d0acb9a7c 100644
--- a/InvenTree/order/views.py
+++ b/InvenTree/order/views.py
@@ -609,23 +609,20 @@ class PurchaseOrderUpload(FileManagementFormView):
                 )
 
     class MyFileManager(FileManager):
-        def setup(self):
-            self.REQUIRED_HEADERS = [
-                'Quantity',
-            ]
+        REQUIRED_HEADERS = [
+            'Quantity',
+        ]
 
-            self.ITEM_MATCH_HEADERS = [
-                'Manufacturer_MPN',
-                'Supplier_SKU',
-            ]
+        ITEM_MATCH_HEADERS = [
+            'Manufacturer_MPN',
+            'Supplier_SKU',
+        ]
 
-            self.OPTIONAL_HEADERS = [
-                'Purchase_Price',
-                'Reference',
-                'Notes',
-            ]
-
-            return super().setup()
+        OPTIONAL_HEADERS = [
+            'Purchase_Price',
+            'Reference',
+            'Notes',
+        ]
 
     name = 'order'
     form_list_override = [
diff --git a/InvenTree/part/views.py b/InvenTree/part/views.py
index 65a5cc652d..1a792dd0ce 100644
--- a/InvenTree/part/views.py
+++ b/InvenTree/part/views.py
@@ -754,31 +754,27 @@ class PartImport(FileManagementFormView):
         'default_supplier': 'default_supplier',
     }
     class MyManger(FileManager):
-        def setup(self):
-            self.REQUIRED_HEADERS = [
-                'Name',
-                'Description',
-            ]
+        REQUIRED_HEADERS = [
+            'Name',
+            'Description',
+        ]
 
-            self.OPTIONAL_MATCH_HEADERS = [
-                'Category',
-                'default_location',
-                'default_supplier',
-            ]
-
-            self.OPTIONAL_HEADERS = [
-                'Keywords',
-                'IPN',
-                'Revision',
-                'Link',
-                'default_expiry',
-                'minimum_stock',
-                'Units',
-                'Notes',
-            ]
-
-            return super().setup()
+        OPTIONAL_MATCH_HEADERS = [
+            'Category',
+            'default_location',
+            'default_supplier',
+        ]
 
+        OPTIONAL_HEADERS = [
+            'Keywords',
+            'IPN',
+            'Revision',
+            'Link',
+            'default_expiry',
+            'minimum_stock',
+            'Units',
+            'Notes',
+        ]
     file_manager_class = MyManger
 
     def get_field_selection(self):