diff --git a/src/osmo_gsm_tester/obj/ms.py b/src/osmo_gsm_tester/obj/ms.py
index 552de71..cd4a8a1 100644
--- a/src/osmo_gsm_tester/obj/ms.py
+++ b/src/osmo_gsm_tester/obj/ms.py
@@ -31,7 +31,7 @@
         'opc': schema.OPC,
         'auth_algo': schema.AUTH_ALGO,
         'apn_ipaddr': schema.IPV4,
-        'ciphers[]': schema.CIPHER,
+        'ciphers[]': schema.CIPHER_2G,
         'features[]': schema.MODEM_FEATURE
         }
     schema.register_resource_schema('modem', resource_schema)