diff --git a/internal/entity/models/novita_test.go b/internal/entity/models/novita_test.go
index 43d12b0c1..fb3c81f7f 100644
--- a/internal/entity/models/novita_test.go
+++ b/internal/entity/models/novita_test.go
@@ -9,12 +9,6 @@ import (
 	"testing"
 )
 
-type roundTripperFunc func(*http.Request) (*http.Response, error)
-
-func (f roundTripperFunc) RoundTrip(r *http.Request) (*http.Response, error) {
-	return f(r)
-}
-
 func newNovitaServer(t *testing.T, expectedPath string, handler func(t *testing.T, body map[string]interface{}, w http.ResponseWriter)) *httptest.Server {
 	t.Helper()
 	return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {