diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 5f4c3672228..16390f19780 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -413,4 +413,5 @@ erpnext.patches.v15_0.update_pick_list_fields
 erpnext.patches.v15_0.update_pegged_currencies
 erpnext.patches.v15_0.set_company_on_pos_inv_merge_log
 erpnext.patches.v15_0.rename_price_list_to_buying_price_list
+erpnext.patches.v15_0.patch_missing_buying_price_list_in_material_request
 erpnext.patches.v15_0.remove_sales_partner_from_consolidated_sales_invoice
diff --git a/erpnext/patches/v15_0/patch_missing_buying_price_list_in_material_request.py b/erpnext/patches/v15_0/patch_missing_buying_price_list_in_material_request.py
new file mode 100644
index 00000000000..48f85335dd2
--- /dev/null
+++ b/erpnext/patches/v15_0/patch_missing_buying_price_list_in_material_request.py
@@ -0,0 +1,13 @@
+import frappe
+import frappe.defaults
+
+
+def execute():
+	if frappe.db.has_column("Material Request", "buying_price_list") and (
+		default_buying_price_list := frappe.defaults.get_defaults().buying_price_list
+	):
+		docs = frappe.get_all(
+			"Material Request", filters={"buying_price_list": ["is", "not set"], "docstatus": 1}, pluck="name"
+		)
+		for doc in docs:
+			frappe.db.set_value("Material Request", doc, "buying_price_list", default_buying_price_list)