diff --git a/render/msgpack.go b/render/msgpack.go
index 6ef5b6e5..92979756 100644
--- a/render/msgpack.go
+++ b/render/msgpack.go
@@ -13,10 +13,6 @@ import (
 	"github.com/ugorji/go/codec"
 )
 
-var (
-	_ Render = MsgPack{}
-)
-
 // MsgPack contains the given interface object.
 type MsgPack struct {
 	Data interface{}
diff --git a/render/render.go b/render/render.go
index bcd568bf..9f16e0a6 100644
--- a/render/render.go
+++ b/render/render.go
@@ -30,6 +30,7 @@ var (
 	_ Render     = Reader{}
 	_ Render     = AsciiJSON{}
 	_ Render     = ProtoBuf{}
+	_ Render     = MsgPack{}
 )
 
 func writeContentType(w http.ResponseWriter, value []string) {
diff --git a/render/render_msgpack_test.go b/render/render_msgpack_test.go
index 8170fbe8..d16cf6e6 100644
--- a/render/render_msgpack_test.go
+++ b/render/render_msgpack_test.go
@@ -39,6 +39,6 @@ func TestRenderMsgPack(t *testing.T) {
 	err = codec.NewEncoder(buf, h).Encode(data)
 
 	assert.NoError(t, err)
-	assert.Equal(t, w.Body.String(), string(buf.Bytes()))
+	assert.Equal(t, w.Body.String(), buf.String())
 	assert.Equal(t, "application/msgpack; charset=utf-8", w.Header().Get("Content-Type"))
 }