diff --git a/shopinvader_cart_expiry/models/shopinvader_backend.py b/shopinvader_cart_expiry/models/shopinvader_backend.py
index 19970c05fe..223d3193ab 100644
--- a/shopinvader_cart_expiry/models/shopinvader_backend.py
+++ b/shopinvader_cart_expiry/models/shopinvader_backend.py
@@ -35,7 +35,10 @@ def _scheduler_manage_cart_expiry(self, domain=False):
         domain = expression.AND([domain, [("cart_expiry_delay", ">", 0)]])
         for backend in self.search(domain):
             description = _("Manage cart expired for backend %s") % backend.name
-            backend.with_delay(description=description).manage_cart_expiry()
+            backend.with_delay(
+                description=description,
+                identity_key="shopinvader_manage_cart_expiry_%s" % (str(backend.id),),
+            ).manage_cart_expiry()
 
     def _get_cart_expiry_delay_domain(self):
         expiry_date = fields.Datetime.from_string(fields.Datetime.now())