diff --git a/variables/variables.robot b/variables/variables.robot
index 95196c9..7f4a018 100644
--- a/variables/variables.robot
+++ b/variables/variables.robot
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 *** Variables ***
-${BBSIM_OLT_SN}    BBSIMOLT000
+${BBSIM_OLT_SN}    BBSIM_OLT_0
 ${BBSIM_ONU_SN}    BBSM00000001
 ${ONOS_REST_PORT}    30120
 ${ONOS_SSH_PORT}    30115