diff --git a/application/Updater.php b/application/Updater.php
index 03d93a6..40a1590 100644
--- a/application/Updater.php
+++ b/application/Updater.php
@@ -328,21 +328,6 @@ class Updater
         return rename('inc/user.css', 'data/user.css');
     }
 
-    /**
-     * While the new default theme is in an unstable state
-     * continue to use the vintage theme
-     */
-    public function updateMethodDefaultThemeVintage()
-    {
-        if ($this->conf->get('resource.theme') !== 'default') {
-            return true;
-        }
-        $this->conf->set('resource.theme', 'vintage');
-        $this->conf->write($this->isLoggedIn);
-
-        return true;
-    }
-
     /**
      * * `markdown_escape` is a new setting, set to true as default.
      *
diff --git a/tests/Updater/UpdaterTest.php b/tests/Updater/UpdaterTest.php
index 11b6444..fed175d 100644
--- a/tests/Updater/UpdaterTest.php
+++ b/tests/Updater/UpdaterTest.php
@@ -469,46 +469,6 @@ $GLOBALS[\'privateLinkByDefault\'] = true;';
         rmdir('sandbox/'. $theme);
     }
 
-    /**
-     * Test updateMethodDefaultThemeVintage with the default theme enabled.
-     */
-    public function testSetDefaultThemeToVintage()
-    {
-        $sandboxConf = 'sandbox/config';
-        copy(self::$configFile . '.json.php', $sandboxConf . '.json.php');
-        $this->conf = new ConfigManager($sandboxConf);
-
-        $this->conf->set('resource.theme', 'default');
-        $updater = new Updater([], [], $this->conf, true);
-        $this->assertTrue($updater->updateMethodDefaultThemeVintage());
-        $this->assertEquals('vintage', $this->conf->get('resource.theme'));
-
-        // reload from file
-        $this->conf = new ConfigManager($sandboxConf);
-        $this->assertEquals('vintage', $this->conf->get('resource.theme'));
-    }
-
-    /**
-     * Test updateMethodDefaultThemeVintage with custom theme enabled => nothing to do.
-     */
-    public function testSetDefaultThemeNothingToDo()
-    {
-        $sandboxConf = 'sandbox/config';
-        copy(self::$configFile . '.json.php', $sandboxConf . '.json.php');
-        $this->conf = new ConfigManager($sandboxConf);
-
-        $theme = 'myawesometheme';
-        $this->conf->set('resource.theme', $theme);
-        $this->conf->write(true);
-        $updater = new Updater([], [], $this->conf, true);
-        $this->assertTrue($updater->updateMethodDefaultThemeVintage());
-        $this->assertEquals($theme, $this->conf->get('resource.theme'));
-
-        // reload from file
-        $this->conf = new ConfigManager($sandboxConf);
-        $this->assertEquals($theme, $this->conf->get('resource.theme'));
-    }
-
     /**
      * Test updateMethodEscapeMarkdown with markdown plugin enabled
      * => setting markdown_escape set to false.