diff --git a/addons/mrp/models/mrp_routing.py b/addons/mrp/models/mrp_routing.py
index 309ef14f6a7..c53d4d4e528 100644
--- a/addons/mrp/models/mrp_routing.py
+++ b/addons/mrp/models/mrp_routing.py
@@ -105,6 +105,12 @@ class MrpRoutingWorkcenter(models.Model):
         if not self._check_m2m_recursion('blocked_by_operation_ids'):
             raise ValidationError(_("You cannot create cyclic dependency."))
 
+    def action_archive(self):
+        res = super().action_archive()
+        bom_lines = self.env['mrp.bom.line'].search([('operation_id', 'in', self.ids)])
+        bom_lines.write({'operation_id': False})
+        return res
+
     def copy_to_bom(self):
         if 'bom_id' in self.env.context:
             bom_id = self.env.context.get('bom_id')