diff --git a/p2p/transport/websocket/browser_integration_native_test.go b/p2p/transport/websocket/browser_integration_native_test.go
index 01486142b6..6934fb14f2 100644
--- a/p2p/transport/websocket/browser_integration_native_test.go
+++ b/p2p/transport/websocket/browser_integration_native_test.go
@@ -58,33 +58,33 @@ func TestInBrowser(t *testing.T) {
 		})
 		addr, err := ma.NewMultiaddr("/ip4/127.0.0.1/tcp/5555/ws")
 		if err != nil {
-			t.Fatal("SERVER:", err)
+			t.Error("SERVER:", err)
 		}
 		listener, err := tpt.Listen(addr)
 		if err != nil {
-			t.Fatal("SERVER:", err)
+			t.Error("SERVER:", err)
 		}
 		conn, err := listener.Accept()
 		if err != nil {
-			t.Fatal("SERVER:", err)
+			t.Error("SERVER:", err)
 		}
 		defer conn.Close()
 		stream, err := conn.OpenStream(context.Background())
 		if err != nil {
-			t.Fatal("SERVER: could not open stream:", err)
+			t.Error("SERVER: could not open stream:", err)
 		}
 		defer stream.Close()
 		buf := bufio.NewReader(stream)
 		if _, err := stream.Write([]byte("ping\n")); err != nil {
-			t.Fatal("SERVER:", err)
+			t.Error("SERVER:", err)
 		}
 		msg, err := buf.ReadString('\n')
 		if err != nil {
-			t.Fatal("SERVER: could not read pong message:" + err.Error())
+			t.Error("SERVER: could not read pong message:" + err.Error())
 		}
 		expected := "pong\n"
 		if msg != expected {
-			t.Fatalf("SERVER: Received wrong message. Expected %q but got %q", expected, msg)
+			t.Errorf("SERVER: Received wrong message. Expected %q but got %q", expected, msg)
 		}
 	}()
 
diff --git a/p2p/transport/websocket/tools/go.mod b/p2p/transport/websocket/tools/go.mod
index d34d7385b2..011649b66f 100644
--- a/p2p/transport/websocket/tools/go.mod
+++ b/p2p/transport/websocket/tools/go.mod
@@ -1,5 +1,5 @@
 module github.com/libp2p/go-ws-transport/tools
 
-go 1.13
+go 1.15
 
-require github.com/agnivade/wasmbrowsertest v0.3.1
+require github.com/agnivade/wasmbrowsertest v0.3.5
diff --git a/p2p/transport/websocket/tools/go.sum b/p2p/transport/websocket/tools/go.sum
index 94b9c35ab1..164a43e812 100644
--- a/p2p/transport/websocket/tools/go.sum
+++ b/p2p/transport/websocket/tools/go.sum
@@ -1,5 +1,5 @@
-github.com/agnivade/wasmbrowsertest v0.3.1 h1:bA9aA+bcp7KuqGvmCuBdnMqy6PXxFjYP7FxsaT+JSqc=
-github.com/agnivade/wasmbrowsertest v0.3.1/go.mod h1:zQt6ZTdl338xxRaMW395qccVE2eQm0SjC/SDz0mPWQI=
+github.com/agnivade/wasmbrowsertest v0.3.5 h1:U8ICR7Xa3LBGQb57HtbbXf5KAMjQhiWrCWlr1kD77Cw=
+github.com/agnivade/wasmbrowsertest v0.3.5/go.mod h1:zQt6ZTdl338xxRaMW395qccVE2eQm0SjC/SDz0mPWQI=
 github.com/chromedp/cdproto v0.0.0-20190614062957-d6d2f92b486d/go.mod h1:S8mB5wY3vV+vRIzf39xDXsw3XKYewW9X6rW2aEmkrSw=
 github.com/chromedp/cdproto v0.0.0-20190621002710-8cbd498dd7a0 h1:4Wocv9f+KWF4GtZudyrn8JSBTgHQbGp86mcsoH7j1iQ=
 github.com/chromedp/cdproto v0.0.0-20190621002710-8cbd498dd7a0/go.mod h1:S8mB5wY3vV+vRIzf39xDXsw3XKYewW9X6rW2aEmkrSw=
diff --git a/p2p/transport/websocket/websocket.go b/p2p/transport/websocket/websocket.go
index 5e7dc9989c..77d522deb4 100644
--- a/p2p/transport/websocket/websocket.go
+++ b/p2p/transport/websocket/websocket.go
@@ -20,20 +20,13 @@ var WsProtocol = ma.ProtocolWithCode(ma.P_WS)
 // WsFmt is multiaddr formatter for WsProtocol
 var WsFmt = mafmt.And(mafmt.TCP, mafmt.Base(ma.P_WS))
 
-// WsCodec is the multiaddr-net codec definition for the websocket transport
-var WsCodec = &manet.NetCodec{
-	NetAddrNetworks:  []string{"websocket"},
-	ProtocolName:     "ws",
-	ConvertMultiaddr: ConvertWebsocketMultiaddrToNetAddr,
-	ParseNetAddr:     ParseWebsocketNetAddr,
-}
-
 // This is _not_ WsFmt because we want the transport to stick to dialing fully
 // resolved addresses.
 var dialMatcher = mafmt.And(mafmt.IP, mafmt.Base(ma.P_TCP), mafmt.Base(ma.P_WS))
 
 func init() {
-	manet.RegisterNetCodec(WsCodec)
+	manet.RegisterFromNetAddr(ParseWebsocketNetAddr, "websocket")
+	manet.RegisterToNetAddr(ConvertWebsocketMultiaddrToNetAddr, "ws")
 }
 
 var _ transport.Transport = (*WebsocketTransport)(nil)
diff --git a/p2p/transport/websocket/websocket_test.go b/p2p/transport/websocket/websocket_test.go
index aa51b74326..1082722e86 100644
--- a/p2p/transport/websocket/websocket_test.go
+++ b/p2p/transport/websocket/websocket_test.go
@@ -164,11 +164,11 @@ func TestWriteZero(t *testing.T) {
 
 	go func() {
 		c, err := tpt.maDial(context.Background(), l.Multiaddr())
-		defer c.Close()
 		if err != nil {
 			t.Error(err)
 			return
 		}
+		defer c.Close()
 
 		for i := 0; i < 100; i++ {
 			n, err := c.Write(msg)
@@ -183,10 +183,10 @@ func TestWriteZero(t *testing.T) {
 	}()
 
 	c, err := l.Accept()
-	defer c.Close()
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer c.Close()
 	buf := make([]byte, 100)
 	n, err := c.Read(buf)
 	if n != 0 {