diff --git a/Doc/library/asyncio-stream.rst b/Doc/library/asyncio-stream.rst
index 0ab08e1b6e3..6177b4bb0f8 100644
--- a/Doc/library/asyncio-stream.rst
+++ b/Doc/library/asyncio-stream.rst
@@ -142,7 +142,7 @@ StreamReader
 
       This method is a :ref:`coroutine <coroutine>`.
 
-   .. coroutinemethod:: readuntil(separator=b'\n')
+   .. coroutinemethod:: readuntil(separator=b'\\n')
 
       Read data from the stream until ``separator`` is found.