diff --git a/src/osmo_gsm_tester/obj/ms_amarisoft.py b/src/osmo_gsm_tester/obj/ms_amarisoft.py
index 6fd80ee..46a92dc 100644
--- a/src/osmo_gsm_tester/obj/ms_amarisoft.py
+++ b/src/osmo_gsm_tester/obj/ms_amarisoft.py
@@ -21,10 +21,17 @@
 import pprint
 
 from ..core import log, util, config, template, process, remote
+from ..core import schema
 from ..core.event_loop import MainLoop
 from .run_node import RunNode
 from .ms import MS
 
+def on_register_schemas():
+    config_schema = {
+        'license_server_addr': schema.IPV4,
+        }
+    schema.register_config_schema('amarisoft', config_schema)
+
 def rf_type_valid(rf_type_str):
     return rf_type_str in ('uhd', 'zmq')