diff --git a/services/nginx/app/objects/department_selfserve_vehicle_conditions_o.php b/services/nginx/app/objects/department_selfserve_vehicle_conditions_o.php
index e94fa9fd..7b13c157 100644
--- a/services/nginx/app/objects/department_selfserve_vehicle_conditions_o.php
+++ b/services/nginx/app/objects/department_selfserve_vehicle_conditions_o.php
@@ -53,6 +53,9 @@ class department_selfserve_vehicle_conditions_o extends db
         $question = (int)$question;
         $value = (bool)$value;
         $customer_id = $customer_id !== null ? (int)$customer_id : null;
+        // Remove any existing entry for the same department, lane, reg and question
+        $sql = "DELETE FROM $this->table WHERE department = $department AND lane = $lane AND reg = '$reg' AND question = $question";
+        $db->query($sql);
         // Add the object
         $tmp_id = self::add_object([
             'department' => $department,