diff --git a/Containers/mastercontainer/daily-backup.sh b/Containers/mastercontainer/daily-backup.sh
index 09eefec1..8f6ecb6a 100644
--- a/Containers/mastercontainer/daily-backup.sh
+++ b/Containers/mastercontainer/daily-backup.sh
@@ -1,10 +1,16 @@
 #!/bin/bash
 
-echo "Daily backup has started"
+echo "Daily backup script has started"
+
+# Daily backup and backup check cannot be run at the same time
+if [ "$DAILY_BACKUP" = 1 ] && [ "$CHECK_BACKUP" = 1 ]; then
+    echo "Daily backup and backup check cannot be run at the same time. Exiting..."
+    exit 1
+fi
 
 # Delete all active sessions and create a lock file
 # But don't kick out the user if the mastercontainer was just updated since we block the interface either way with the lock file
-if [ "$LOCK_FILE_PRESENT" = 0 ]; then
+if [ "$LOCK_FILE_PRESENT" = 0 ] || ! [ -f "/mnt/docker-aio-config/data/daily_backup_running" ]; then
     rm -f "/mnt/docker-aio-config/session/"*
 fi
 sudo -u www-data touch "/mnt/docker-aio-config/data/daily_backup_running"
@@ -26,6 +32,8 @@ done
 
 # Update the mastercontainer
 if [ "$AUTOMATIC_UPDATES" = 1 ]; then
+    echo "Starting mastercontainer update..." 
+    echo "(The script might get exited due to that. In order to update all the other containers correctly, you need to run this script with the same settings a second time.)"
     sudo -u www-data php /var/www/docker-aio/php/src/Cron/UpdateMastercontainer.php
 fi
 
@@ -40,20 +48,31 @@ else
 fi
 
 # Stop containers if required
-if [ "$DAILY_BACKUP" != 1 ] || [ "$STOP_CONTAINERS" = 1 ]; then
+# shellcheck disable=SC2235
+if [ "$CHECK_BACKUP" != 1 ] && ([ "$DAILY_BACKUP" != 1 ] || [ "$STOP_CONTAINERS" = 1 ]); then
+    echo "Stopping containers..."
     sudo -u www-data php /var/www/docker-aio/php/src/Cron/StopContainers.php
 fi
 
 # Execute the backup itself and some related tasks (also stops the containers)
 if [ "$DAILY_BACKUP" = 1 ]; then
+    echo "Creating daily backup..."
     sudo -u www-data php /var/www/docker-aio/php/src/Cron/CreateBackup.php
 fi
 
+# Execute backup check
+if [ "$CHECK_BACKUP" = 1 ]; then
+    echo "Starting backup check..."
+    sudo -u www-data php /var/www/docker-aio/php/src/Cron/CheckBackup.php
+fi
+
 # Start and/or update containers
 if [ "$AUTOMATIC_UPDATES" = 1 ]; then
+    echo "Starting and updating containers..."
     sudo -u www-data php /var/www/docker-aio/php/src/Cron/StartAndUpdateContainers.php
 else
     if [ "$START_CONTAINERS" = 1 ]; then
+        echo "Starting containers without updating them..."
         sudo -u www-data php /var/www/docker-aio/php/src/Cron/StartContainers.php
     fi
 fi
@@ -75,7 +94,8 @@ if [ "$DAILY_BACKUP" = 1 ]; then
             fi
         done
     fi
+    echo "Sending backup notification..."
     sudo -u www-data php /var/www/docker-aio/php/src/Cron/BackupNotification.php
 fi
 
-echo "Daily backup has finished"
+echo "Daily backup script has finished"
diff --git a/php/src/Controller/DockerController.php b/php/src/Controller/DockerController.php
index 74891d5f..c1f44312 100644
--- a/php/src/Controller/DockerController.php
+++ b/php/src/Controller/DockerController.php
@@ -85,14 +85,17 @@ class DockerController
     }
 
     public function StartBackupContainerCheck(Request $request, Response $response, $args) : Response {
+        $this->checkBackup();
+        return $response->withStatus(201)->withHeader('Location', '/');
+    }
+
+    public function checkBackup() : void {
         $config = $this->configurationManager->GetConfig();
         $config['backup-mode'] = 'check';
         $this->configurationManager->WriteConfig($config);
 
         $id = 'nextcloud-aio-borgbackup';
         $this->PerformRecursiveContainerStart($id);
-
-        return $response->withStatus(201)->withHeader('Location', '/');
     }
 
     public function StartBackupContainerRestore(Request $request, Response $response, $args) : Response {
diff --git a/php/src/Cron/CheckBackup.php b/php/src/Cron/CheckBackup.php
new file mode 100644
index 00000000..6d9b027c
--- /dev/null
+++ b/php/src/Cron/CheckBackup.php
@@ -0,0 +1,17 @@
+<?php
+declare(strict_types=1);
+
+// increase memory limit to 2GB
+ini_set('memory_limit', '2048M');
+
+use DI\Container;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+$container = \AIO\DependencyInjection::GetContainer();
+
+/** @var \AIO\Controller\DockerController $dockerController */
+$dockerController = $container->get(\AIO\Controller\DockerController::class);
+
+// Stop container and start backup check
+$dockerController->checkBackup();
diff --git a/readme.md b/readme.md
index f4a12ba4..d564caef 100644
--- a/readme.md
+++ b/readme.md
@@ -381,6 +381,7 @@ You can do so by running the `/daily-backup.sh` script that is stored in the mas
 - `DAILY_BACKUP` if set to `1`, it will automatically stop the containers and create a backup. If you want to start them again afterwards, you may have a look at the `START_CONTAINERS` option. Please be aware that this option is non-blocking which means that the backup is not done when the process is finished since it only start the borgbackup container with the correct configuration.
 - `START_CONTAINERS` if set to `1`, it will automatically start the containers without updating them.
 - `STOP_CONTAINERS` if set to `1`, it will automatically stop the containers.
+- `CHECK_BACKUP` if set to `1`, it will start the backup check. This is not allowed to be enabled at the same time like `DAILY_BACKUP`.
 
 One example for this would be `sudo docker exec -it -e DAILY_BACKUP=1 nextcloud-aio-mastercontainer /daily-backup.sh`, which you can run via a cronjob or put it in a script.