diff --git a/lib/Controller/SettingsController.php b/lib/Controller/SettingsController.php
index 042a7f6d..e23f7961 100644
--- a/lib/Controller/SettingsController.php
+++ b/lib/Controller/SettingsController.php
@@ -14,30 +14,18 @@
 namespace OCA\Files_Antivirus\Controller;
 
 use OCA\Files_Antivirus\ScannerFactory;
-use \OCP\AppFramework\Controller;
-use \OCP\IRequest;
-use \OCP\IL10N;
-use \OCA\Files_Antivirus\AppConfig;
+use OCP\AppFramework\Controller;
+use OCP\IRequest;
+use OCP\IL10N;
+use OCA\Files_Antivirus\AppConfig;
 
-use \OCP\AppFramework\Http\TemplateResponse;
-use \OCP\AppFramework\Http\JSONResponse;
+use OCP\AppFramework\Http\TemplateResponse;
+use OCP\AppFramework\Http\JSONResponse;
 
 class SettingsController extends Controller {
-
-	/**
-	 * @var AppConfig
-	 */
-	private $settings;
-
-	/**
-	 * @var ScannerFactory
-	 */
-	private $scannerFactory;
-
-	/**
-	 * @var IL10N
-	 */
-	private $l10n;
+	private AppConfig $settings;
+	private ScannerFactory $scannerFactory;
+	private IL10N $l10n;
 
 	/**
 	 * SettingsController constructor.
@@ -61,10 +49,8 @@ public function __construct(
 
 	/**
 	 * Print config section
-	 *
-	 * @return TemplateResponse
 	 */
-	public function index() {
+	public function index(): TemplateResponse {
 		$data = $this->settings->getAllValues();
 		return new TemplateResponse('files_antivirus', 'settings', $data, 'blank');
 	}
@@ -75,12 +61,13 @@ public function index() {
 	 * @param string $avMode - antivirus mode
 	 * @param string $avSocket - path to socket (Socket mode)
 	 * @param string $avHost - antivirus url
-	 * @param int $avPort - port
+	 * @param ?int $avPort - port
 	 * @param string $avInfectedAction - action performed on infected files
 	 * @param int $avStreamMaxLength - reopen socket after bytes
 	 * @param int $avMaxFileSize - file size limit
 	 * @param string $avRequestService
 	 * @param string $avResponseHeader
+	 * @param string $avScanBackground
 	 *
 	 * @return JSONResponse
 	 */
@@ -93,8 +80,9 @@ public function save(
 		$avStreamMaxLength,
 		$avMaxFileSize,
 		$avRequestService,
-		$avResponseHeader
-	) {
+		$avResponseHeader,
+		$avScanBackground
+	): JSONResponse {
 		try {
 			if ($avMode === 'daemon') {
 				$this->settings->setAvPort($avPort);
@@ -122,6 +110,7 @@ public function save(
 			$this->settings->setAvStreamMaxLength($avStreamMaxLength);
 			$this->settings->setAvMaxFileSize($avMaxFileSize);
 			$this->settings->setAvMode($avMode);
+			$this->settings->setAvScanBackground($avScanBackground);
 
 			$connectionStatus = (int)$this->scannerFactory->testConnection($this->settings);
 			$response = [
diff --git a/templates/settings.php b/templates/settings.php
index 657bf3d3..b34198b6 100644
--- a/templates/settings.php
+++ b/templates/settings.php
@@ -83,6 +83,10 @@
 				/>
 				<label for="av_max_file_size" class="a-left"><?php p($l->t('bytes'))?></label>
 			</p>
+			<p class="av_scan_background">
+				<label for="av_scan_background"><?php p($l->t('Background scanning'));?></label>
+				<select id="av_scan_background" name="avScanBackground"><?php print_unescaped(html_select_options(['true' => $l->t('Enabled'), 'false' => $l->t('Disabled')], $_['avScanBackground'])) ?></select>
+			</p>
 			<p class="infected_action">
 				<label for="av_infected_action"><?php p($l->t('When infected files were found during a background scan'));?></label>
 				<select id="av_infected_action" name="avInfectedAction"><?php print_unescaped(html_select_options(['only_log' => $l->t('Only log'), 'delete' => $l->t('Delete file')], $_['avInfectedAction'])) ?></select>
diff --git a/tests/unit/Controller/SettingsControllerTest.php b/tests/unit/Controller/SettingsControllerTest.php
index 97e08954..4712aca6 100644
--- a/tests/unit/Controller/SettingsControllerTest.php
+++ b/tests/unit/Controller/SettingsControllerTest.php
@@ -44,7 +44,7 @@ public function setUp(): void {
 
 		$this->config = $this->getMockBuilder(AppConfig::class)
 			->disableOriginalConstructor()
-			->setMethods(['setter', 'getAppValue'])
+			->onlyMethods(['setter', 'getAppValue'])
 			->getMock();
 
 		$this->scannerFactory = $this->getMockBuilder(ScannerFactory::class)
@@ -59,7 +59,8 @@ public function testSaveExecutable(): void {
 				['av_infected_action', ['delete']],
 				['av_stream_max_length', [100]],
 				['av_max_file_size', [800]],
-				['av_mode', ['executable']]
+				['av_mode', ['executable']],
+				['av_scan_background', [true]],
 			);
 
 		$settings = new SettingsController($this->request, $this->config, $this->scannerFactory, $this->l10n);
@@ -72,7 +73,8 @@ public function testSaveExecutable(): void {
 			100,
 			800,
 			'',
-			''
+			'',
+			true
 		);
 	}
 
@@ -84,7 +86,8 @@ public function testSaveSocket(): void {
 				['av_infected_action', ['delete']],
 				['av_stream_max_length', [100]],
 				['av_max_file_size', [800]],
-				['av_mode', ['socket']]
+				['av_mode', ['socket']],
+				['av_scan_background', [false]],
 			);
 
 		$settings = new SettingsController($this->request, $this->config, $this->scannerFactory, $this->l10n);
@@ -98,7 +101,8 @@ public function testSaveSocket(): void {
 			100,
 			800,
 			'',
-			''
+			'',
+			false
 		);
 	}
 
@@ -128,7 +132,8 @@ public function testSaveDaemon(): void {
 			100,
 			800,
 			'',
-			''
+			'',
+			true
 		);
 	}
 }