diff --git a/models/sale_intervention.py b/models/sale_intervention.py
index b509afc093c6a2b59d0da69c765d9bc263c696a4..e90e6bb8cc4f2571246e9aaa9df245ff2d31005b 100644
--- a/models/sale_intervention.py
+++ b/models/sale_intervention.py
@@ -551,7 +551,7 @@ class SaleIntervention(models.Model):
         self.mulch_has_staples = False
         if self.mulch_unit == self.env.ref(
             "uom.product_uom_meter"
-        ) or self.much_unit == self.env.ref("uom.product_uom_cubic_meter"):
+        ) or self.mulch_unit == self.env.ref("uom.product_uom_cubic_meter"):
             self.mulch_qty = self.intervention_length
         elif self.mulch_unit == self.env.ref("uom.product_uom_unit"):
             self.mulch_qty = self.plant_qty
@@ -564,7 +564,7 @@ class SaleIntervention(models.Model):
         self.mulch2_has_staples = False
         if self.mulch_unit == self.env.ref(
             "uom.product_uom_meter"
-        ) or self.much_unit == self.env.ref("uom.product_uom_cubic_meter"):
+        ) or self.mulch_unit == self.env.ref("uom.product_uom_cubic_meter"):
             self.mulch2_qty = self.intervention_length
         elif self.mulch2_unit == self.env.ref("uom.product_uom_unit"):
             self.mulch2_qty = self.plant_qty