diff --git a/erpnext/stock/doctype/material_request/material_request.py b/erpnext/stock/doctype/material_request/material_request.py
index cc993325fb1..b9aa7065c5d 100644
--- a/erpnext/stock/doctype/material_request/material_request.py
+++ b/erpnext/stock/doctype/material_request/material_request.py
@@ -298,7 +298,8 @@ class MaterialRequest(BuyingController):
 
 					if mr_qty_allowance:
 						allowed_qty = flt(
-							(d.qty + (d.qty * (mr_qty_allowance / 100))), d.precision("ordered_qty")
+							(d.stock_qty + (d.stock_qty * (mr_qty_allowance / 100))),
+							d.precision("ordered_qty"),
 						)
 
 						if d.ordered_qty and flt(d.ordered_qty, precision) > flt(allowed_qty, precision):