diff --git a/erpnext/buying/doctype/purchase_order/purchase_order.py b/erpnext/buying/doctype/purchase_order/purchase_order.py
index 0a28177ba74..637a86846f9 100644
--- a/erpnext/buying/doctype/purchase_order/purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/purchase_order.py
@@ -310,12 +310,13 @@ class PurchaseOrder(BuyingController):
 			itemwise_qty.setdefault(d.item_code, 0)
 			itemwise_qty[d.item_code] += flt(d.stock_qty)
 
+		precision = self.items[0].precision("stock_qty")
 		for item_code, qty in itemwise_qty.items():
-			if flt(qty) < flt(itemwise_min_order_qty.get(item_code)):
+			if flt(qty, precision) < flt(itemwise_min_order_qty.get(item_code), precision):
 				frappe.throw(
 					_(
 						"Item {0}: Ordered qty {1} cannot be less than minimum order qty {2} (defined in Item)."
-					).format(item_code, qty, itemwise_min_order_qty.get(item_code))
+					).format(item_code, flt(qty, precision), itemwise_min_order_qty.get(item_code))
 				)
 
 	def get_schedule_dates(self):
diff --git a/erpnext/buying/doctype/purchase_order/test_purchase_order.py b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
index d36dedb200a..05c6542939d 100644
--- a/erpnext/buying/doctype/purchase_order/test_purchase_order.py
+++ b/erpnext/buying/doctype/purchase_order/test_purchase_order.py
@@ -707,6 +707,23 @@ class TestPurchaseOrder(ERPNextTestSuite):
 		po = create_purchase_order(qty=3.4, do_not_save=True)
 		self.assertRaises(UOMMustBeIntegerError, po.insert)
 
+	def test_min_order_qty_with_uom_conversion_dust(self):
+		item_doc = make_item(properties={"min_order_qty": 2000, "stock_uom": "Kg"})
+		item_doc.append("uoms", {"uom": "Litre", "conversion_factor": 0.6})
+		item_doc.save()
+		item = item_doc.name
+
+		precision = frappe.get_precision("Purchase Order Item", "stock_qty")
+		po = create_purchase_order(item_code=item, qty=flt(2000 / 0.6, precision), do_not_save=1)
+		po.items[0].uom = "Litre"
+		po.items[0].conversion_factor = 0.6
+		po.insert()
+
+		below_minimum = create_purchase_order(item_code=item, qty=3000, do_not_save=1)
+		below_minimum.items[0].uom = "Litre"
+		below_minimum.items[0].conversion_factor = 0.6
+		self.assertRaises(frappe.ValidationError, below_minimum.insert)
+
 	def test_ordered_qty_for_closing_po(self):
 		bin = frappe.get_all(
 			"Bin",