diff --git a/sys/apps/network/snmp.lua b/sys/apps/network/snmp.lua
index aa25151..ac2e8bf 100644
--- a/sys/apps/network/snmp.lua
+++ b/sys/apps/network/snmp.lua
@@ -124,6 +124,10 @@ Event.on('modem_message', function(_, _, sport, id, info, distance)
 		network[id].distance = distance
 		network[id].timestamp = os.clock()
 
+		if not network[id].label then
+			network[id].label = 'unknown'
+		end
+
 		if not network[id].active then
 			network[id].active = true
 			os.queueEvent('network_attach', network[id])