diff --git a/samples/oss-service-instance-valid.yaml b/samples/oss-service-instance-valid.yaml
index 6638fbe..3ca4236 100644
--- a/samples/oss-service-instance-valid.yaml
+++ b/samples/oss-service-instance-valid.yaml
@@ -26,7 +26,7 @@
       properties:
         name: hippie-oss
         must-exist: true
-        blacklist: ""
+        whitelist: BRCM1234 # NOTE: this ONU must exist in the system (check in olt-service examples to create it)
 
     oss_si:
       type: tosca.nodes.HippieOSSServiceInstance