diff --git a/bin/worker.php b/bin/worker.php
index d5cd1f6b4b..9ae2f68b3e 100755
--- a/bin/worker.php
+++ b/bin/worker.php
@@ -7,6 +7,7 @@
 use Friendica\App;
 use Friendica\Core\Config;
 use Friendica\Core\Worker;
+use Friendica\Core\Update;
 
 // Get options
 $shortopts = 'sn';
@@ -30,7 +31,7 @@ require_once "boot.php";
 $a = new App(dirname(__DIR__));
 
 // Check the database structure and possibly fixes it
-check_db(true);
+Update::check(true);
 
 // Quit when in maintenance
 if (!$a->getMode()->has(App\Mode::MAINTENANCEDISABLED)) {
diff --git a/boot.php b/boot.php
index efff5baffa..0ca2fcdf8b 100644
--- a/boot.php
+++ b/boot.php
@@ -413,33 +413,6 @@ function defaults() {
 	return $return;
 }
 
-/**
- * @brief Function to check if request was an AJAX (xmlhttprequest) request.
- *
- * @param boolean $via_worker boolean Is the check run via the worker?
- */
-function check_db($via_worker)
-{
-	$build = Config::get('system', 'build');
-
-	if (empty($build)) {
-		Config::set('system', 'build', DB_UPDATE_VERSION - 1);
-		$build = DB_UPDATE_VERSION - 1;
-	}
-
-	// We don't support upgrading from very old versions anymore
-	if ($build < NEW_UPDATE_ROUTINE_VERSION) {
-		die('You try to update from a version prior to database version 1170. The direct upgrade path is not supported. Please update to version 3.5.4 before updating to this version.');
-	}
-
-	if ($build < DB_UPDATE_VERSION) {
-		// When we cannot execute the database update via the worker, we will do it directly
-		if (!Worker::add(PRIORITY_CRITICAL, 'DBUpdate') && $via_worker) {
-			Update::run();
-		}
-	}
-}
-
 /**
  * @brief Automatic database updates
  * @param object $a App
diff --git a/src/Core/Update.php b/src/Core/Update.php
index d4bcd04bba..e749c7233a 100644
--- a/src/Core/Update.php
+++ b/src/Core/Update.php
@@ -9,6 +9,33 @@ class Update
 	const SUCCESS = 0;
 	const FAILED  = 1;
 
+	/**
+	 * @brief Function to check if the Database structure needs an update.
+	 *
+	 * @param boolean $via_worker boolean Is the check run via the worker?
+	 */
+	public static function check($via_worker)
+	{
+		$build = Config::get('system', 'build');
+
+		if (empty($build)) {
+			Config::set('system', 'build', DB_UPDATE_VERSION - 1);
+			$build = DB_UPDATE_VERSION - 1;
+		}
+
+		// We don't support upgrading from very old versions anymore
+		if ($build < NEW_UPDATE_ROUTINE_VERSION) {
+			die('You try to update from a version prior to database version 1170. The direct upgrade path is not supported. Please update to version 3.5.4 before updating to this version.');
+		}
+
+		if ($build < DB_UPDATE_VERSION) {
+			// When we cannot execute the database update via the worker, we will do it directly
+			if (!Worker::add(PRIORITY_CRITICAL, 'DBUpdate') && $via_worker) {
+				self::run();
+			}
+		}
+	}
+
 	/**
 	 * Automatic database updates
 	 */