diff --git a/internal/internal.go b/internal/internal.go
index ec63f91..7526bb6 100644
--- a/internal/internal.go
+++ b/internal/internal.go
@@ -41,6 +41,14 @@ func ConfigDir() (string, error) {
 	return filepath.Join(homeDir, ".config", "gops"), nil
 }
 
+func getOSUserConfigDir() string {
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return ""
+	}
+	return configDir
+}
+
 func guessUnixHomeDir() string {
 	usr, err := user.Current()
 	if err == nil {
diff --git a/internal/internal_go1_13.go b/internal/internal_go1_13.go
deleted file mode 100644
index 252f796..0000000
--- a/internal/internal_go1_13.go
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build go1.13
-// +build go1.13
-
-package internal
-
-import (
-	"os"
-)
-
-func getOSUserConfigDir() string {
-	configDir, err := os.UserConfigDir()
-	if err != nil {
-		return ""
-	}
-	return configDir
-}
diff --git a/internal/internal_lt_go1_13.go b/internal/internal_lt_go1_13.go
deleted file mode 100644
index e1bb00e..0000000
--- a/internal/internal_lt_go1_13.go
+++ /dev/null
@@ -1,12 +0,0 @@
-// Copyright 2020 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build !go1.13
-// +build !go1.13
-
-package internal
-
-func getOSUserConfigDir() string {
-	return ""
-}