diff --git a/libp2p/muxers/mplex/lpchannel.nim b/libp2p/muxers/mplex/lpchannel.nim
index cf1e9627a..a5a00a4ce 100644
--- a/libp2p/muxers/mplex/lpchannel.nim
+++ b/libp2p/muxers/mplex/lpchannel.nim
@@ -77,7 +77,6 @@ proc newChannel*(id: uint64,
   result.msgCode = if initiator: MessageType.MsgOut else: MessageType.MsgIn
   result.closeCode = if initiator: MessageType.CloseOut else: MessageType.CloseIn
   result.resetCode = if initiator: MessageType.ResetOut else: MessageType.ResetIn
-  result.writeLock = newAsyncLock()
   result.isLazy = lazy
 
   let chan = result
@@ -178,6 +177,7 @@ method close*(s: LPChannel) {.async, gcsafe.} =
   s.closedLocal = true
   if s.atEof: # already closed by remote close parent buffer imediately
     await procCall BufferStream(s).close()
+
   trace "lpchannel closed local", id = s.id,
                                   initiator = s.initiator,
                                   name = s.name,
diff --git a/tests/testmplex.nim b/tests/testmplex.nim
index eea99636c..138084ea3 100644
--- a/tests/testmplex.nim
+++ b/tests/testmplex.nim
@@ -276,11 +276,12 @@ suite "Mplex":
       let mplexDial = newMplex(conn)
       let stream = await mplexDial.newStream(lazy = true)
       let mplexDialFut = mplexDial.handle()
-      check not LPChannel(stream.stream).isOpen # assert lazy
+      let openState = cast[LPChannel](stream).isOpen
       await stream.writeLp("HELLO")
-      check LPChannel(stream.stream).isOpen # assert lazy
       await stream.close()
 
+      check not openState # assert lazy
+
       await done.wait(1.seconds)
       await conn.close()
       await mplexDialFut
@@ -387,6 +388,7 @@ suite "Mplex":
           check string.fromBytes(msg) == &"stream {count}!"
           count.inc
           await stream.close()
+          count.inc
           if count == 10:
             done.complete()