diff --git a/rattail_corepos/corepos/importing/rattail.py b/rattail_corepos/corepos/importing/rattail.py
index eb68191..d6e0395 100644
--- a/rattail_corepos/corepos/importing/rattail.py
+++ b/rattail_corepos/corepos/importing/rattail.py
@@ -204,8 +204,8 @@ class ProductImporter(FromRattail, corepos_importing.model.ProductImporter):
         return {
             'upc': product.item_id,
             'brand': product.brand.name if product.brand else '',
-            'description': product.description or None,
-            'size': product.size,
+            'description': product.description or '',
+            'size': product.size or '',
             'department': str(product.department.number) if product.department else None,
             'normal_price': '{:0.2f}'.format(product.regular_price.price) if product.regular_price else None,
             'foodstamp': '1' if product.food_stampable else '0',