diff --git a/fusion_plating/fusion_plating/models/fp_job_step_move.py b/fusion_plating/fusion_plating/models/fp_job_step_move.py
index d9b41347..c4f2aa48 100644
--- a/fusion_plating/fusion_plating/models/fp_job_step_move.py
+++ b/fusion_plating/fusion_plating/models/fp_job_step_move.py
@@ -29,7 +29,7 @@ class FpJobStepMove(models.Model):
     from_step_id = fields.Many2one('fp.job.step', string='From Step',
         ondelete='set null', index=True)
     to_step_id = fields.Many2one('fp.job.step', string='To Step',
-        ondelete='set null', index=True, required=True)
+        ondelete='restrict', index=True, required=True)
     from_tank_id = fields.Many2one('fusion.plating.tank',
         related='from_step_id.tank_id', store=True)
     to_tank_id = fields.Many2one('fusion.plating.tank', string='To Tank',