diff --git a/src/osmo_gsm_tester/bts_nanobts.py b/src/osmo_gsm_tester/bts_nanobts.py
index d631f1c..29a8ac5 100644
--- a/src/osmo_gsm_tester/bts_nanobts.py
+++ b/src/osmo_gsm_tester/bts_nanobts.py
@@ -80,7 +80,7 @@
 # PUBLIC (test API included)
 ###################
 
-    def start(self):
+    def start(self, keepalive=False):
         if self.conf.get('ipa_unit_id') is None:
             raise log.Error('No attribute %s provided in conf!' % attr)
         self.run_dir = util.Dir(self.suite_run.get_test_run_dir().new_dir(self.name()))