diff --git a/lib/plug/cowboy.ex b/lib/plug/cowboy.ex
index 4ed13e4..0f62b9b 100644
--- a/lib/plug/cowboy.ex
+++ b/lib/plug/cowboy.ex
@@ -290,7 +290,6 @@ defmodule Plug.Cowboy do
 
           socket_opts =
             socket_opts
-            |> Keyword.put_new(:next_protocols_advertised, ["h2", "http/1.1"])
             |> Keyword.put_new(:alpn_preferred_protocols, ["h2", "http/1.1"])
 
           {:ranch_ssl, :cowboy_tls, %{transport_opts | socket_opts: socket_opts}}
diff --git a/test/plug/cowboy_test.exs b/test/plug/cowboy_test.exs
index e5ea59c..83e0699 100644
--- a/test/plug/cowboy_test.exs
+++ b/test/plug/cowboy_test.exs
@@ -63,7 +63,6 @@ defmodule Plug.CowboyTest do
            ] = opts
 
     assert Keyword.get(socket_opts, :alpn_preferred_protocols) == ["h2", "http/1.1"]
-    assert Keyword.get(socket_opts, :next_protocols_advertised) == ["h2", "http/1.1"]
   end
 
   test "builds args for cowboy dispatch" do