diff --git a/intervention/models/intervention.py b/intervention/models/intervention.py
index e226b8e..face187 100644
--- a/intervention/models/intervention.py
+++ b/intervention/models/intervention.py
@@ -312,9 +312,7 @@ class Intervention(BaseObject,
         super().mark_as_deleted(user, send_mail)
 
         # Remove pending deductions to free booked capacities
-        deductions = EcoAccountDeduction.objects.filter(
-            intervention=self
-        )
+        deductions = self.deductions.all()
         # Remove one by one instead of bulk to trigger EcoAccountDeduction custom delete() logic
         for deduction in deductions:
             deduction.delete()