diff --git a/erpnext/stock/doctype/material_request/material_request.py b/erpnext/stock/doctype/material_request/material_request.py
index b430d03d92b..cf61f9657f4 100644
--- a/erpnext/stock/doctype/material_request/material_request.py
+++ b/erpnext/stock/doctype/material_request/material_request.py
@@ -228,7 +228,8 @@ class MaterialRequest(BuyingController):
 					d.ordered_qty = flt(mr_items_ordered_qty.get(d.name))
 
 					if mr_qty_allowance:
-						allowed_qty = d.qty + (d.qty * (mr_qty_allowance / 100))
+						allowed_qty = flt((d.qty + (d.qty * (mr_qty_allowance / 100))), d.precision("ordered_qty"))
+
 						if d.ordered_qty and d.ordered_qty > allowed_qty:
 							frappe.throw(
 								_(