diff --git a/src/Guzzle/AuthenticatorSubscriber.php b/src/Guzzle/AuthenticatorSubscriber.php
index 080512736..c7a3b1083 100644
--- a/src/Guzzle/AuthenticatorSubscriber.php
+++ b/src/Guzzle/AuthenticatorSubscriber.php
@@ -9,7 +9,7 @@ use GuzzleHttp\Message\RequestInterface;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerInterface;
 use Psr\Log\NullLogger;
-use Wallabag\SiteConfig\Authenticator\Authenticator;
+use Wallabag\SiteConfig\Authenticator\LoginFormAuthenticator;
 use Wallabag\SiteConfig\SiteConfig;
 use Wallabag\SiteConfig\SiteConfigBuilder;
 
@@ -23,7 +23,7 @@ class AuthenticatorSubscriber implements SubscriberInterface, LoggerAwareInterfa
     /** @var SiteConfigBuilder */
     private $configBuilder;
 
-    /** @var Authenticator */
+    /** @var LoginFormAuthenticator */
     private $authenticator;
 
     /** @var LoggerInterface */
@@ -32,7 +32,7 @@ class AuthenticatorSubscriber implements SubscriberInterface, LoggerAwareInterfa
     /**
      * AuthenticatorSubscriber constructor.
      */
-    public function __construct(SiteConfigBuilder $configBuilder, Authenticator $authenticator)
+    public function __construct(SiteConfigBuilder $configBuilder, LoginFormAuthenticator $authenticator)
     {
         $this->configBuilder = $configBuilder;
         $this->authenticator = $authenticator;
diff --git a/src/SiteConfig/Authenticator/Authenticator.php b/src/SiteConfig/Authenticator/Authenticator.php
deleted file mode 100644
index 9623e39ab..000000000
--- a/src/SiteConfig/Authenticator/Authenticator.php
+++ /dev/null
@@ -1,32 +0,0 @@
-<?php
-
-namespace Wallabag\SiteConfig\Authenticator;
-
-use GuzzleHttp\ClientInterface;
-use Wallabag\SiteConfig\SiteConfig;
-
-interface Authenticator
-{
-    /**
-     * Logs the configured user on the given Guzzle client.
-     *
-     * @return self
-     */
-    public function login(SiteConfig $siteConfig, ClientInterface $guzzle);
-
-    /**
-     * Checks if we are logged into the site, but without calling the server (e.g. do we have a Cookie).
-     *
-     * @return bool
-     */
-    public function isLoggedIn(SiteConfig $siteConfig, ClientInterface $guzzle);
-
-    /**
-     * Checks from the HTML of a page if authentication is requested by a grabbed page.
-     *
-     * @param string $html
-     *
-     * @return bool
-     */
-    public function isLoginRequired(SiteConfig $siteConfig, $html);
-}
diff --git a/src/SiteConfig/Authenticator/LoginFormAuthenticator.php b/src/SiteConfig/Authenticator/LoginFormAuthenticator.php
index 487e51cdb..00f8ab5ee 100644
--- a/src/SiteConfig/Authenticator/LoginFormAuthenticator.php
+++ b/src/SiteConfig/Authenticator/LoginFormAuthenticator.php
@@ -9,8 +9,13 @@ use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
 use Wallabag\ExpressionLanguage\AuthenticatorProvider;
 use Wallabag\SiteConfig\SiteConfig;
 
-class LoginFormAuthenticator implements Authenticator
+class LoginFormAuthenticator
 {
+    /**
+     * Logs the configured user on the given Guzzle client.
+     *
+     * @return self
+     */
     public function login(SiteConfig $siteConfig, ClientInterface $guzzle)
     {
         $postFields = [
@@ -26,6 +31,11 @@ class LoginFormAuthenticator implements Authenticator
         return $this;
     }
 
+    /**
+     * Checks if we are logged into the site, but without calling the server (e.g. do we have a Cookie).
+     *
+     * @return bool
+     */
     public function isLoggedIn(SiteConfig $siteConfig, ClientInterface $guzzle)
     {
         if (($cookieJar = $guzzle->getDefaultOption('cookies')) instanceof CookieJar) {
@@ -41,6 +51,13 @@ class LoginFormAuthenticator implements Authenticator
         return false;
     }
 
+    /**
+     * Checks from the HTML of a page if authentication is requested by a grabbed page.
+     *
+     * @param string $html
+     *
+     * @return bool
+     */
     public function isLoginRequired(SiteConfig $siteConfig, $html)
     {
         // need to check for the login dom element ($options['not_logged_in_xpath']) in the HTML
diff --git a/tests/Guzzle/AuthenticatorSubscriberTest.php b/tests/Guzzle/AuthenticatorSubscriberTest.php
index 76cfadf32..8b1319c37 100644
--- a/tests/Guzzle/AuthenticatorSubscriberTest.php
+++ b/tests/Guzzle/AuthenticatorSubscriberTest.php
@@ -14,13 +14,13 @@ use Monolog\Logger;
 use PHPUnit\Framework\TestCase;
 use Wallabag\Guzzle\AuthenticatorSubscriber;
 use Wallabag\SiteConfig\ArraySiteConfigBuilder;
-use Wallabag\SiteConfig\Authenticator\Authenticator;
+use Wallabag\SiteConfig\Authenticator\LoginFormAuthenticator;
 
 class AuthenticatorSubscriberTest extends TestCase
 {
     public function testGetEvents()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();
 
@@ -38,7 +38,7 @@ class AuthenticatorSubscriberTest extends TestCase
 
     public function testLoginIfRequiredNotRequired()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();
 
@@ -71,7 +71,7 @@ class AuthenticatorSubscriberTest extends TestCase
 
     public function testLoginIfRequiredWithNotLoggedInUser()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();
 
@@ -123,7 +123,7 @@ class AuthenticatorSubscriberTest extends TestCase
 
     public function testLoginIfRequestedNotRequired()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();
 
@@ -156,7 +156,7 @@ class AuthenticatorSubscriberTest extends TestCase
 
     public function testLoginIfRequestedNotRequested()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();
 
@@ -205,7 +205,7 @@ class AuthenticatorSubscriberTest extends TestCase
 
     public function testLoginIfRequestedRequested()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();
 
@@ -263,7 +263,7 @@ class AuthenticatorSubscriberTest extends TestCase
 
     public function testLoginIfRequestedRedirect()
     {
-        $authenticator = $this->getMockBuilder(Authenticator::class)
+        $authenticator = $this->getMockBuilder(LoginFormAuthenticator::class)
             ->disableOriginalConstructor()
             ->getMock();