X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/0e343c408f25ebd720f88a717a601cb696a2e089..refs/pull/5591/head:/app/Theming/ThemeService.php

diff --git a/app/Theming/ThemeService.php b/app/Theming/ThemeService.php
index 639854d6a..4bdb6836b 100644
--- a/app/Theming/ThemeService.php
+++ b/app/Theming/ThemeService.php
@@ -93,7 +93,7 @@ class ThemeService
     /**
      * @see SocialDriverManager::addSocialDriver
      */
-    public function addSocialDriver(string $driverName, array $config, string $socialiteHandler, callable $configureForRedirect = null): void
+    public function addSocialDriver(string $driverName, array $config, string $socialiteHandler, ?callable $configureForRedirect = null): void
     {
         $driverManager = app()->make(SocialDriverManager::class);
         $driverManager->addSocialDriver($driverName, $config, $socialiteHandler, $configureForRedirect);