diff --git a/pms/models/pms_folio.py b/pms/models/pms_folio.py
index ebbfaeaab3..0b9fd2c164 100644
--- a/pms/models/pms_folio.py
+++ b/pms/models/pms_folio.py
@@ -882,12 +882,12 @@ def _compute_company_id(self):
     )
     def _compute_pricelist_id(self):
         for folio in self:
-            is_new = not folio.pricelist_id or not isinstance(folio.id, models.NewId)
+            is_new = not folio.pricelist_id or isinstance(folio.id, models.NewId)
             if folio.reservation_type in ("out", "staff"):
                 folio.pricelist_id = False
             elif len(folio.reservation_ids.pricelist_id) == 1:
                 folio.pricelist_id = folio.reservation_ids.pricelist_id
-            elif folio.agency_id and folio.agency_id.apply_pricelist and is_new:
+            elif is_new and folio.agency_id and folio.agency_id.apply_pricelist:
                 folio.pricelist_id = folio.agency_id.property_product_pricelist
             elif (
                 is_new
diff --git a/pms/models/pms_reservation.py b/pms/models/pms_reservation.py
index 6dc1f15bd0..32bf0ca36f 100644
--- a/pms/models/pms_reservation.py
+++ b/pms/models/pms_reservation.py
@@ -1018,7 +1018,7 @@ def _compute_service_ids(self):
     @api.depends("partner_id", "agency_id")
     def _compute_pricelist_id(self):
         for reservation in self:
-            is_new = not reservation.pricelist_id or not isinstance(
+            is_new = not reservation.pricelist_id or isinstance(
                 reservation.id, models.NewId
             )
             if reservation.reservation_type in ("out", "staff"):