diff --git a/src/osmo_gsm_tester/suite.py b/src/osmo_gsm_tester/suite.py
index 2ac2062..9b975fd 100644
--- a/src/osmo_gsm_tester/suite.py
+++ b/src/osmo_gsm_tester/suite.py
@@ -351,7 +351,9 @@
         return osmo_stp.OsmoStp(self, ip_address)
 
     def bts(self, specifics=None):
-        return bts_obj(self, self.reserved_resources.get(resource.R_BTS, specifics=specifics))
+        bts = bts_obj(self, self.reserved_resources.get(resource.R_BTS, specifics=specifics))
+        self.register_for_cleanup(bts)
+        return bts
 
     def modem(self, specifics=None):
         conf = self.reserved_resources.get(resource.R_MODEM, specifics=specifics)