diff --git a/db_scripts/diff/15385.down b/db_scripts/diff/15385.down
new file mode 100644
index 00000000..661ef700
--- /dev/null
+++ b/db_scripts/diff/15385.down
@@ -0,0 +1,7 @@
+use billing;
+
+ALTER TABLE `contract_balances`
+  DROP COLUMN `initial_cash_balance`,
+  DROP COLUMN `initial_free_time_balance`;
+
+ALTER TABLE topup_log CHANGE COLUMN `type` `type` ENUM('cash','voucher') NOT NULL;
diff --git a/db_scripts/diff/15385.up b/db_scripts/diff/15385.up
new file mode 100644
index 00000000..e1880270
--- /dev/null
+++ b/db_scripts/diff/15385.up
@@ -0,0 +1,8 @@
+use billing;
+
+ALTER TABLE `contract_balances`
+  ADD COLUMN `initial_cash_balance` double DEFAULT NULL,
+  ADD COLUMN `initial_free_time_balance` int(11) DEFAULT NULL;
+
+ALTER TABLE topup_log CHANGE COLUMN `type` `type` ENUM('cash','voucher','set_balance') NOT NULL;
+