diff --git a/database/3.1.1_to_3.2.0.sql b/database/3.1.1_to_3.2.0.sql
index 2c5da0d05..5d740ba96 100644
--- a/database/3.1.1_to_3.2.0.sql
+++ b/database/3.1.1_to_3.2.0.sql
@@ -86,4 +86,11 @@ INSERT INTO `ospos_app_config` (`key`, `value`) VALUES
 -- Add key->value to save setting for allowing duplicate barcodes
 
 INSERT INTO `ospos_app_config` (`key`, `value`) VALUES
-('allow_duplicate_barcodes', '0');
\ No newline at end of file
+('allow_duplicate_barcodes', '0');
+
+
+-- Modify items table to allow duplicate barcodes
+
+ALTER TABLE `ospos_items`
+  DROP INDEX item_number,
+  ADD KEY (item_number);
\ No newline at end of file