diff --git a/lib/tfw/components/terminado_mini_server.py b/lib/tfw/components/terminado_mini_server.py
index 26afe31..691099a 100644
--- a/lib/tfw/components/terminado_mini_server.py
+++ b/lib/tfw/components/terminado_mini_server.py
@@ -10,16 +10,20 @@ log = logging.getLogger(__name__)
 class TerminadoMiniServer:
     def __init__(self, url, port, workdir, shellcmd):
         self.port = port
-        self.term_manager = SingleTermManager(shell_command=shellcmd,
-                                              term_settings={'cwd': workdir})
+        self._term_manager = SingleTermManager(shell_command=shellcmd,
+                                               term_settings={'cwd': workdir})
         self.application = Application(
             [(
                 url,
                 TerminadoMiniServer.CORSTermSocket,
-                {'term_manager': self.term_manager}
+                {'term_manager': self._term_manager}
             )]
         )
 
+    @property
+    def term_manager(self):
+        return self._term_manager
+
     @property
     def pty(self):
         return self.term_manager.terminal.ptyproc