fix typo
diff --git a/xos/tosca/samples/vtn.yaml b/xos/tosca/samples/vtn.yaml
index 64d2b66..5ce4670 100644
--- a/xos/tosca/samples/vtn.yaml
+++ b/xos/tosca/samples/vtn.yaml
@@ -25,7 +25,7 @@
               relationship: tosca.relationships.TenantOfService
       properties:
           dependencies: org.onosproject.openstackswitching, org.onosproject.cordvtn
-          rest_onos/v1/network/configuration/: { get_atrifact: [ SELF, vtn_network_cfg_json, LOCAL_FILE ] }
+          rest_onos/v1/network/configuration/: { get_artifact: [ SELF, vtn_network_cfg_json, LOCAL_FILE ] }
       artifacts:
           vtn_network_cfg_json: /root/setup/vtn-network-cfg.json