diff --git a/erpnext/patches/v13_0/update_timesheet_changes.py b/erpnext/patches/v13_0/update_timesheet_changes.py
index 3acce18..93b7f8e 100644
--- a/erpnext/patches/v13_0/update_timesheet_changes.py
+++ b/erpnext/patches/v13_0/update_timesheet_changes.py
@@ -3,19 +3,20 @@
 from frappe.model.utils.rename_field import rename_field
 
 def execute():
-	if "billable" in frappe.db.get_table_columns("Timesheet Detail"):
-		rename_field("Timesheet Detail", "billable", "is_billable")
-	
-	base_currency = frappe.defaults.get_global_default('currency')
 	frappe.reload_doc("projects", "doctype", "timesheet")
 	frappe.reload_doc("projects", "doctype", "timesheet_detail")
 
+	if frappe.db.has_column("Timesheet Detail", "billable"):
+		rename_field("Timesheet Detail", "billable", "is_billable")
+
+	base_currency = frappe.defaults.get_global_default('currency')
+
 	frappe.db.sql("""UPDATE `tabTimesheet Detail`
 			SET base_billing_rate = billing_rate,
 			base_billing_amount = billing_amount,
 			base_costing_rate = costing_rate,
 			base_costing_amount = costing_amount""")
-	
+
 	frappe.db.sql("""UPDATE `tabTimesheet`
 			SET currency = '{0}',
 			exchange_rate = 1.0,