diff --git a/addons/purchase_stock/models/stock_rule.py b/addons/purchase_stock/models/stock_rule.py
index bbbd767c5dd..4487edeaacd 100644
--- a/addons/purchase_stock/models/stock_rule.py
+++ b/addons/purchase_stock/models/stock_rule.py
@@ -44,6 +44,11 @@ class StockRule(models.Model):
     def _run_buy(self, procurements):
         procurements_by_po_domain = defaultdict(list)
         errors = []
+        # Origins we don't want to appear in the PO source field.
+        origins_to_hide = [
+            _('Manual Replenishment'),
+            _('Replenishment Report'),
+        ]
         for procurement, rule in procurements:
 
             # Get the schedule date in order to find a valid seller
@@ -88,7 +93,7 @@ class StockRule(models.Model):
             procurements, rules = zip(*procurements_rules)
 
             # Get the set of procurement origin for the current domain.
-            origins = set([p.origin for p in procurements])
+            origins = set([p.origin for p in procurements if p.origin not in origins_to_hide])
             # Check if a PO exists for the current domain.
             po = self.env['purchase.order'].sudo().search([dom for dom in domain], limit=1)
             company_id = procurements[0].company_id
diff --git a/addons/purchase_stock/tests/test_replenish_wizard.py b/addons/purchase_stock/tests/test_replenish_wizard.py
index bdb126dd57a..36f14d7a2c3 100644
--- a/addons/purchase_stock/tests/test_replenish_wizard.py
+++ b/addons/purchase_stock/tests/test_replenish_wizard.py
@@ -44,9 +44,8 @@ class TestReplenishWizard(TestStockCommon):
         })
         replenish_wizard.launch_replenishment()
         last_po_id = self.env['purchase.order'].search([
-            ('origin', 'ilike', '%Manual Replenishment%'),
             ('partner_id', '=', self.vendor.id)
-        ])[-1]
+        ], order="id desc", limit=1)
         self.assertTrue(last_po_id, 'Purchase Order not found')
         order_line = last_po_id.order_line.search([('product_id', '=', self.product1.id)])
         self.assertTrue(order_line, 'The product is not in the Purchase Order')
@@ -93,9 +92,7 @@ class TestReplenishWizard(TestStockCommon):
             'warehouse_id': self.wh.id,
         })
         replenish_wizard.launch_replenishment()
-        last_po_id = self.env['purchase.order'].search([
-            ('origin', 'ilike', '%Manual Replenishment%'),
-        ])[-1]
+        last_po_id = self.env['purchase.order'].search([], order="id desc", limit=1)
         self.assertEqual(last_po_id.partner_id, vendor1)
         self.assertEqual(last_po_id.order_line.price_unit, 100)
 
@@ -148,9 +145,7 @@ class TestReplenishWizard(TestStockCommon):
             'warehouse_id': self.wh.id,
         })
         replenish_wizard.launch_replenishment()
-        last_po_id = self.env['purchase.order'].search([
-            ('origin', 'ilike', '%Manual Replenishment%'),
-        ])[-1]
+        last_po_id = self.env['purchase.order'].search([], order="id desc", limit=1)
         self.assertEqual(last_po_id.partner_id, vendor1)
         self.assertEqual(last_po_id.order_line.price_unit, 100)
 
@@ -193,9 +188,7 @@ class TestReplenishWizard(TestStockCommon):
             'warehouse_id': self.wh.id,
         })
         replenish_wizard.launch_replenishment()
-        last_po_id = self.env['purchase.order'].search([
-            ('origin', 'ilike', '%Manual Replenishment%'),
-        ])[-1]
+        last_po_id = self.env['purchase.order'].search([], order="id desc", limit=1)
         self.assertEqual(last_po_id.partner_id, vendor2)
 
     def test_chose_supplier_4(self):
@@ -241,9 +234,7 @@ class TestReplenishWizard(TestStockCommon):
             'warehouse_id': self.wh.id,
         })
         replenish_wizard.launch_replenishment()
-        last_po_id = self.env['purchase.order'].search([
-            ('origin', 'ilike', '%Manual Replenishment%'),
-        ])[-1]
+        last_po_id = self.env['purchase.order'].search([], order="id desc", limit=1)
 
         self.assertEqual(last_po_id.partner_id, vendor1)
         self.assertEqual(last_po_id.order_line.price_unit, 60)