diff --git a/python/adapters/ponsim_olt/ponsim_olt.py b/python/adapters/ponsim_olt/ponsim_olt.py
index fc617a3..84e303c 100644
--- a/python/adapters/ponsim_olt/ponsim_olt.py
+++ b/python/adapters/ponsim_olt/ponsim_olt.py
@@ -272,7 +272,7 @@
 
             nni_port = Port(
                 port_no=info.nni_port,
-                label='NNI facing Ethernet port',
+                label='nni-'+ str(info.nni_port),
                 type=Port.ETHERNET_NNI,
                 oper_status=OperStatus.ACTIVE
             )
@@ -280,7 +280,7 @@
             yield self.core_proxy.port_created(device.id, nni_port)
             yield self.core_proxy.port_created(device.id, Port(
                 port_no=1,
-                label='PON port',
+                label='pon-1',
                 type=Port.PON_OLT,
                 oper_status=OperStatus.ACTIVE
             ))