diff --git a/src/osmo_gsm_tester/obj/bts_oc2g.py b/src/osmo_gsm_tester/obj/bts_oc2g.py
index 7761ce3..9164827 100644
--- a/src/osmo_gsm_tester/obj/bts_oc2g.py
+++ b/src/osmo_gsm_tester/obj/bts_oc2g.py
@@ -88,7 +88,7 @@
     def ready_for_pcu(self):
         if not self.proc_bts or not self.proc_bts.is_running:
             return False
-        return 'BTS is up' in (self.proc_bts.get_stdout() or '')
+        return 'Started listening on PCU socket' in (self.proc_bts.get_stdout() or '')
 
     def start(self, keepalive=False):
         if self.bsc is None:
diff --git a/src/osmo_gsm_tester/obj/bts_sysmo.py b/src/osmo_gsm_tester/obj/bts_sysmo.py
index 3f48f93..91a46be 100644
--- a/src/osmo_gsm_tester/obj/bts_sysmo.py
+++ b/src/osmo_gsm_tester/obj/bts_sysmo.py
@@ -88,7 +88,7 @@
     def ready_for_pcu(self):
         if not self.proc_bts or not self.proc_bts.is_running:
             return False
-        return 'BTS is up' in (self.proc_bts.get_stdout() or '')
+        return 'Started listening on PCU socket' in (self.proc_bts.get_stdout() or '')
 
     def start(self, keepalive=False):
         if self.bsc is None: