diff --git a/tractor/ipc/_ringbuf.py b/tractor/ipc/_ringbuf.py
index 7d96eeda..10975b7a 100644
--- a/tractor/ipc/_ringbuf.py
+++ b/tractor/ipc/_ringbuf.py
@@ -512,6 +512,7 @@ class RingBuffBytesSender(trio.abc.SendChannel[bytes]):
         msg: bytes = struct.pack("<I", len(value)) + value
         if self.batch_size == 1:
             await self._sender.send_all(msg)
+            return
 
         self._batch += msg
         self._batch_msg_len += 1