diff --git a/keys.go b/keys.go
index 3f594f5..7058111 100644
--- a/keys.go
+++ b/keys.go
@@ -1,31 +1,42 @@
 package writefreely
 
 import (
 	"io/ioutil"
+	"path/filepath"
+)
+
+const (
+	keysDir = "keys"
+)
+
+var (
+	emailKeyPath      = filepath.Join(keysDir, "email.aes256")
+	cookieAuthKeyPath = filepath.Join(keysDir, "cookies_auth.aes256")
+	cookieKeyPath     = filepath.Join(keysDir, "cookies_enc.aes256")
 )
 
 type keychain struct {
 	emailKey, cookieAuthKey, cookieKey []byte
 }
 
 func initKeys(app *app) error {
 	var err error
 	app.keys = &keychain{}
 
-	app.keys.emailKey, err = ioutil.ReadFile("keys/email.aes256")
+	app.keys.emailKey, err = ioutil.ReadFile(emailKeyPath)
 	if err != nil {
 		return err
 	}
 
-	app.keys.cookieAuthKey, err = ioutil.ReadFile("keys/cookies_auth.aes256")
+	app.keys.cookieAuthKey, err = ioutil.ReadFile(cookieAuthKeyPath)
 	if err != nil {
 		return err
 	}
 
-	app.keys.cookieKey, err = ioutil.ReadFile("keys/cookies_enc.aes256")
+	app.keys.cookieKey, err = ioutil.ReadFile(cookieKeyPath)
 	if err != nil {
 		return err
 	}
 
 	return nil
 }