diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 6be6e06ca7..7495ab8d0b 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -316,6 +316,7 @@ erpnext.patches.v14_0.create_accounting_dimensions_in_subcontracting_doctypes
 erpnext.patches.v14_0.fix_subcontracting_receipt_gl_entries
 erpnext.patches.v14_0.migrate_remarks_from_gl_to_payment_ledger
 erpnext.patches.v13_0.update_schedule_type_in_loans
+erpnext.patches.v13_0.drop_unused_sle_index_parts
 erpnext.patches.v14_0.create_accounting_dimensions_for_asset_capitalization
 erpnext.patches.v14_0.update_partial_tds_fields
 erpnext.patches.v14_0.create_incoterms_and_migrate_shipment
diff --git a/erpnext/patches/v13_0/drop_unused_sle_index_parts.py b/erpnext/patches/v13_0/drop_unused_sle_index_parts.py
new file mode 100644
index 0000000000..fa8a98ce16
--- /dev/null
+++ b/erpnext/patches/v13_0/drop_unused_sle_index_parts.py
@@ -0,0 +1,14 @@
+import frappe
+
+from erpnext.stock.doctype.stock_ledger_entry.stock_ledger_entry import on_doctype_update
+
+
+def execute():
+	try:
+		frappe.db.sql_ddl("ALTER TABLE `tabStock Ledger Entry` DROP INDEX `posting_sort_index`")
+	except Exception:
+		frappe.log_error("Failed to drop index")
+		return
+
+	# Recreate indexes
+	on_doctype_update()
diff --git a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
index c64370dcdf..052f7781c1 100644
--- a/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
+++ b/erpnext/stock/doctype/stock_ledger_entry/stock_ledger_entry.py
@@ -221,14 +221,9 @@ class StockLedgerEntry(Document):
 
 
 def on_doctype_update():
-	if not frappe.db.has_index("tabStock Ledger Entry", "posting_sort_index"):
-		frappe.db.commit()
-		frappe.db.add_index(
-			"Stock Ledger Entry",
-			fields=["posting_date", "posting_time", "name"],
-			index_name="posting_sort_index",
-		)
-
+	frappe.db.add_index(
+		"Stock Ledger Entry", fields=["posting_date", "posting_time"], index_name="posting_sort_index"
+	)
 	frappe.db.add_index("Stock Ledger Entry", ["voucher_no", "voucher_type"])
 	frappe.db.add_index("Stock Ledger Entry", ["batch_no", "item_code", "warehouse"])
 	frappe.db.add_index("Stock Ledger Entry", ["warehouse", "item_code"], "item_warehouse")