diff --git a/bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingPeriod_createBalanceTransaction.xml b/bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingPeriod_createBalanceTransaction.xml
index c3a4bbefc66f02e3cfc770060c5d5a5da99e5351..25312bdb7109b2cd5ff86fc68f2f43c527b418c7 100644
--- a/bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingPeriod_createBalanceTransaction.xml
+++ b/bt5/erp5_accounting/SkinTemplateItem/portal_skins/erp5_accounting/AccountingPeriod_createBalanceTransaction.xml
@@ -138,8 +138,8 @@ for inventory in getInventoryList(\n
         group_by_resource=1,\n
         **inventory_param_dict):\n
   \n
-  total_price = roundCurrency(inventory.total_price, section_currency)\n
-  quantity = roundCurrency(inventory.total_quantity,\n
+  total_price = roundCurrency(inventory.total_price or 0, section_currency)\n
+  quantity = roundCurrency(inventory.total_quantity or 0,\n
                            inventory.resource_relative_url)\n
 \n
   if inventory.resource_uid != section_currency_uid:\n
diff --git a/bt5/erp5_accounting/bt/revision b/bt5/erp5_accounting/bt/revision
index c0db21d808434d1d2d318e959bc4c7c190a76dcf..cbafdca534b6a2ba9e4ac1da16571516aa607b2d 100644
--- a/bt5/erp5_accounting/bt/revision
+++ b/bt5/erp5_accounting/bt/revision
@@ -1 +1 @@
-392
\ No newline at end of file
+393
\ No newline at end of file