diff --git a/database/3.0.2_to_3.1.0.sql b/database/3.0.2_to_3.1.0.sql
index 5e30c7bca..443a60d05 100644
--- a/database/3.0.2_to_3.1.0.sql
+++ b/database/3.0.2_to_3.1.0.sql
@@ -308,10 +308,19 @@ INSERT INTO `ospos_app_config` (`key`, `value`) VALUES
 ('gcaptcha_secret_key', ''),
 ('gcaptcha_site_key', '');
 
--- add Barcode formats
+-- add Barcode formats and other missing keys
 
 INSERT INTO `ospos_app_config` (`key`, `value`) VALUES
-('barcode_formats', '[]');
+('barcode_formats', '[]'),
+('barcode_font', 'Arial'),
+('barcode_font_size', '10'),
+('barcode_height', '50'),
+('barcode_quality', '100'),
+('barcode_type', 'Code39'),
+('barcode_width', '250'),
+('cash_decimals', '2'),
+('cash_rounding_code', '0'),
+('receiving_calculate_average_price', '0');
 
 -- replace old tokens in ospos_app_config
 
@@ -351,6 +360,8 @@ DROP TABLE `ospos_sales_suspended_payments`, `ospos_sales_suspended_items_taxes`
 -- General fixing to realign upgraded database to clean database structure
 --
 
+DELETE FROM `ospos_app_config` WHERE `key` = 'print_after_sale';
+
 ALTER TABLE ospos_giftcards ADD record_time timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP;
 ALTER TABLE ospos_giftcards MODIFY value decimal(15,2) NOT NULL;
 ALTER TABLE ospos_items MODIFY cost_price decimal(15,2) NOT NULL;