diff --git a/src/meshctrl/tunnel.py b/src/meshctrl/tunnel.py
index 65c2987..25b9abe 100644
--- a/src/meshctrl/tunnel.py
+++ b/src/meshctrl/tunnel.py
@@ -52,7 +52,7 @@ class Tunnel(object):
                 options["ssl"] = self._session._ssl_context
 
             if (len(self.node_id.split('/')) != 3):
-                self.node_id = f"node/{self._session._currentDomain or ""}/{self.node_id}"
+                self.node_id = f"node/{self._session._currentDomain or ''}/{self.node_id}"
 
             self._tunnel_id = util._get_random_hex(6)
 
@@ -91,4 +91,4 @@ class Tunnel(object):
             await websocket.send(message)
 
     async def _listen_data_task(self, websocket):
-        raise NotImplementedError("Listen data not implemented")
\ No newline at end of file
+        raise NotImplementedError("Listen data not implemented")