diff --git a/libp2p/transport/listener_interface.py b/libp2p/transport/listener_interface.py
index 2c6ebea..7815856 100644
--- a/libp2p/transport/listener_interface.py
+++ b/libp2p/transport/listener_interface.py
@@ -11,7 +11,8 @@ class IListener(ABC):
         self, maddr: Multiaddr, task_status: Any = trio.TASK_STATUS_IGNORED
     ) -> bool:
         """
-        put listener in listening mode and wait for incoming connections.
+        put listener in listening mode and wait for incoming connections. It
+        blocks until it stops to listen.
 
         :param maddr: multiaddr of peer
         :return: return True if successful
diff --git a/libp2p/transport/tcp/tcp.py b/libp2p/transport/tcp/tcp.py
index 40fe5bf..8400d6e 100644
--- a/libp2p/transport/tcp/tcp.py
+++ b/libp2p/transport/tcp/tcp.py
@@ -27,7 +27,8 @@ class TCPListener(IListener):
         self, maddr: Multiaddr, task_status: TaskStatus[Any] = trio.TASK_STATUS_IGNORED
     ) -> None:
         """
-        put listener in listening mode and wait for incoming connections.
+        put listener in listening mode and wait for incoming connections. It
+        blocks until it stops to listen.
 
         :param maddr: maddr of peer
         :return: return True if successful