diff --git a/connectivity/lwipstack/mbed_lib.json b/connectivity/lwipstack/mbed_lib.json
index 1852dd7d4d..6e725819b4 100644
--- a/connectivity/lwipstack/mbed_lib.json
+++ b/connectivity/lwipstack/mbed_lib.json
@@ -158,7 +158,7 @@
             "help": "number of RDNS from RA (router advertisements) to be used, RFC5006",
             "value": 0
         },
-        "nd6_queueing": {
+        "nd6-queueing": {
             "help": "queue outgoing IPv6 packets while MAC address is being resolved",
             "value": 0
         }