diff --git a/libp2p/stream_muxer/mplex/mplex.py b/libp2p/stream_muxer/mplex/mplex.py
index 7aefe3f9..8c784313 100644
--- a/libp2p/stream_muxer/mplex/mplex.py
+++ b/libp2p/stream_muxer/mplex/mplex.py
@@ -44,9 +44,9 @@ class Mplex(IMuxedConn):
         for new muxed streams
         :param peer_id: peer_id of peer the connection is to
         """
-        self.conn = secured_conn
+        self.secured_conn = secured_conn
 
-        if self.conn.initiator:
+        if self.secured_conn.initiator:
             self.next_stream_id = 0
         else:
             self.next_stream_id = 1
@@ -67,13 +67,13 @@ class Mplex(IMuxedConn):
 
     @property
     def initiator(self) -> bool:
-        return self.conn.initiator
+        return self.secured_conn.initiator
 
     async def close(self) -> None:
         """
-        close the stream muxer and underlying raw connection
+        close the stream muxer and underlying secured connection
         """
-        await self.conn.close()
+        await self.secured_conn.close()
 
     def is_closed(self) -> bool:
         """
@@ -84,7 +84,8 @@ class Mplex(IMuxedConn):
 
     async def read_buffer(self, stream_id: int) -> bytes:
         """
-        Read a message from stream_id's buffer, check raw connection for new messages.
+        Read a message from buffer of the stream specified by `stream_id`,
+        check secured connection for new messages.
         `StreamNotFound` is raised when stream `stream_id` is not found in `Mplex`.
         :param stream_id: stream id of stream to read from
         :return: message read
@@ -95,7 +96,7 @@ class Mplex(IMuxedConn):
 
     async def read_buffer_nonblocking(self, stream_id: int) -> Optional[bytes]:
         """
-        Read a message from `stream_id`'s buffer, non-blockingly.
+        Read a message from buffer of the stream specified by `stream_id`, non-blockingly.
         `StreamNotFound` is raised when stream `stream_id` is not found in `Mplex`.
         """
         if stream_id not in self.buffers:
@@ -121,7 +122,7 @@ class Mplex(IMuxedConn):
         creates a new muxed_stream
         :param protocol_id: protocol_id of stream
         :param multi_addr: multi_addr that stream connects to
-        :return: a new stream
+        :return: a new muxed stream
         """
         stream_id = self._get_next_stream_id()
         stream = MplexStream(stream_id, True, self)
@@ -159,16 +160,16 @@ class Mplex(IMuxedConn):
 
     async def write_to_stream(self, _bytes: bytearray) -> int:
         """
-        writes a byte array to a raw connection
+        writes a byte array to a secured connection
         :param _bytes: byte array to write
         :return: length written
         """
-        await self.conn.write(_bytes)
+        await self.secured_conn.write(_bytes)
         return len(_bytes)
 
     async def handle_incoming(self) -> None:
         """
-        Read a message off of the raw connection and add it to the corresponding message buffer
+        Read a message off of the secured connection and add it to the corresponding message buffer
         """
         # TODO Deal with other types of messages using flag (currently _)
 
@@ -192,7 +193,7 @@ class Mplex(IMuxedConn):
 
     async def read_message(self) -> Tuple[int, int, bytes]:
         """
-        Read a single message off of the raw connection
+        Read a single message off of the secured connection
         :return: stream_id, flag, message contents
         """
 
@@ -201,9 +202,11 @@ class Mplex(IMuxedConn):
         #  loop in handle_incoming
         timeout = 0.1
         try:
-            header = await decode_uvarint_from_stream(self.conn, timeout)
-            length = await decode_uvarint_from_stream(self.conn, timeout)
-            message = await asyncio.wait_for(self.conn.read(length), timeout=timeout)
+            header = await decode_uvarint_from_stream(self.secured_conn, timeout)
+            length = await decode_uvarint_from_stream(self.secured_conn, timeout)
+            message = await asyncio.wait_for(
+                self.secured_conn.read(length), timeout=timeout
+            )
         except asyncio.TimeoutError:
             return None, None, None
 
diff --git a/tests/security/test_security_multistream.py b/tests/security/test_security_multistream.py
index d3a5b4ec..1d87e7b6 100644
--- a/tests/security/test_security_multistream.py
+++ b/tests/security/test_security_multistream.py
@@ -53,8 +53,8 @@ async def perform_simple_test(
     node2_conn = node2.get_network().connections[peer_id_for_node(node1)]
 
     # Perform assertion
-    assertion_func(node1_conn.conn)
-    assertion_func(node2_conn.conn)
+    assertion_func(node1_conn.secured_conn)
+    assertion_func(node2_conn.secured_conn)
 
     # Success, terminate pending tasks.
     await cleanup()