diff --git a/prototype.go b/prototype.go
index e9a27d9..90e9aa3 100644
--- a/prototype.go
+++ b/prototype.go
@@ -35,7 +35,7 @@ type PrototypeErrorResponse interface {
 }
 
 type Prototype struct {
-	req    PrototypeRequestBuilder
-	res    PrototypeResponse
-	errRes PrototypeErrorResponse
+	PrototypeRequestBuilder
+	PrototypeResponse
+	PrototypeErrorResponse
 }
diff --git a/server.go b/server.go
index c891461..de9a2b2 100644
--- a/server.go
+++ b/server.go
@@ -65,7 +65,7 @@ func (srv *server) handleError(errRes ErrorResponse, w http.ResponseWriter) (ok
 
 func (srv *server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	p := srv.prototype
-	req := p.req.RequestBuilder()
+	req := p.PrototypeRequestBuilder.RequestBuilder()
 	if ok := srv.handleError(req.Allowed(r.Method), w); !ok {
 		return
 	}
@@ -79,7 +79,7 @@ func (srv *server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	if ok := srv.handleError(req.Values(Values(r.Form)), w); !ok {
 		return
 	}
-	res := p.res.Response()
+	res := p.PrototypeResponse.Response()
 	for _, stage := range srv.serve {
 		for _, s := range stage {
 			if ok := srv.handleError(s(req, res), w); !ok {