diff --git a/libp2p/multiaddress.nim b/libp2p/multiaddress.nim
index 3754a47..e313fba 100644
--- a/libp2p/multiaddress.nim
+++ b/libp2p/multiaddress.nim
@@ -856,7 +856,7 @@ proc init*(mtype: typedesc[MultiAddress], address: ValidIpAddress,
     of IpAddressFamily.IPv4: res.data.writeArray(address.address_v4)
     of IpAddressFamily.IPv6: res.data.writeArray(address.address_v6)
   res.data.write(transportProto.mcodec)
-  res.data.write(toBytesBE(uint16(port)))
+  res.data.writeArray(toBytesBE(uint16(port)))
   res.data.finish()
   ok(res)