diff --git a/g2p_program_cycleless/models/program_manager.py b/g2p_program_cycleless/models/program_manager.py
index 7174a76a..8a87607b 100644
--- a/g2p_program_cycleless/models/program_manager.py
+++ b/g2p_program_cycleless/models/program_manager.py
@@ -11,7 +11,7 @@ class DefaultProgramManager(models.Model):
     @api.constrains("is_cycleless")
     def onchange_is_cycless(self):
         orig_prog_man = self.program_id.get_manager(constants.MANAGER_PROGRAM)
-        if self.id == orig_prog_man.id:
+        if orig_prog_man and self.id == orig_prog_man.id:
             self.program_id.is_cycleless = self.is_cycleless
             if self.is_cycleless and not self.program_id.default_active_cycle:
                 self.program_id.create_new_cycle()
diff --git a/g2p_programs/models/managers/cycle_manager.py b/g2p_programs/models/managers/cycle_manager.py
index f25ac310..964f0562 100644
--- a/g2p_programs/models/managers/cycle_manager.py
+++ b/g2p_programs/models/managers/cycle_manager.py
@@ -17,7 +17,7 @@ class CycleManager(models.Model):
     _description = "Cycle Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):
diff --git a/g2p_programs/models/managers/deduplication_manager.py b/g2p_programs/models/managers/deduplication_manager.py
index db774da5..98b39a1f 100644
--- a/g2p_programs/models/managers/deduplication_manager.py
+++ b/g2p_programs/models/managers/deduplication_manager.py
@@ -14,7 +14,7 @@ class DeduplicationManager(models.Model):
     _description = "Deduplication Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):
diff --git a/g2p_programs/models/managers/eligibility_manager.py b/g2p_programs/models/managers/eligibility_manager.py
index bb35c0eb..b4aa23bf 100644
--- a/g2p_programs/models/managers/eligibility_manager.py
+++ b/g2p_programs/models/managers/eligibility_manager.py
@@ -13,7 +13,7 @@ class EligibilityManager(models.Model):
     _description = "Eligibility Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):
diff --git a/g2p_programs/models/managers/entitlement_manager.py b/g2p_programs/models/managers/entitlement_manager.py
index 998c342f..b86ecb1c 100644
--- a/g2p_programs/models/managers/entitlement_manager.py
+++ b/g2p_programs/models/managers/entitlement_manager.py
@@ -13,7 +13,7 @@ class EntitlementManager(models.Model):
     _description = "Entitlement Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):
diff --git a/g2p_programs/models/managers/notification_manager.py b/g2p_programs/models/managers/notification_manager.py
index f213c7eb..a20cac79 100644
--- a/g2p_programs/models/managers/notification_manager.py
+++ b/g2p_programs/models/managers/notification_manager.py
@@ -7,7 +7,7 @@ class Notification(models.Model):
     _description = "Program Notification Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):
diff --git a/g2p_programs/models/managers/payment_manager.py b/g2p_programs/models/managers/payment_manager.py
index b79459e5..8ef51373 100644
--- a/g2p_programs/models/managers/payment_manager.py
+++ b/g2p_programs/models/managers/payment_manager.py
@@ -18,7 +18,7 @@ class PaymentManager(models.Model):
     _description = "Payment Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):
diff --git a/g2p_programs/models/managers/program_manager.py b/g2p_programs/models/managers/program_manager.py
index 82e43ffc..189d568e 100644
--- a/g2p_programs/models/managers/program_manager.py
+++ b/g2p_programs/models/managers/program_manager.py
@@ -17,7 +17,7 @@ class ProgramManager(models.Model):
     _description = "Program Manager"
     _inherit = "g2p.manager.mixin"
 
-    program_id = fields.Many2one("g2p.program", "Program")
+    program_id = fields.Many2one("g2p.program", "Program", ondelete="cascade")
 
     @api.model
     def _selection_manager_ref_id(self):