diff --git a/lib/Controller/FeedController.php b/lib/Controller/FeedController.php
index 2357a63c6..982d7f878 100644
--- a/lib/Controller/FeedController.php
+++ b/lib/Controller/FeedController.php
@@ -47,7 +47,7 @@ public function __construct(
 	#[PublicPage]
 	#[NoCSRFRequired]
 	#[BruteForceProtection('activityRssFeed')]
-	public function show(): TemplateResponse {
+	public function show(string $filter = 'all'): TemplateResponse {
 		$response = new TemplateResponse('activity', 'rss', [], '');
 		try {
 			$user = $this->activityManager->getCurrentUserId();
@@ -57,8 +57,9 @@ public function show(): TemplateResponse {
 			$this->l = $this->l10nFactory->get('activity', $userLang);
 			$this->helper->setL10n($this->l);
 
+			$filter = $this->data->validateFilter($filter);
 			$description = $this->l->t('Personal activity feed for %s', $user);
-			$data = $this->data->get($this->helper, $this->settings, $user, 0, self::DEFAULT_PAGE_SIZE, 'desc', 'all');
+			$data = $this->data->get($this->helper, $this->settings, $user, 0, self::DEFAULT_PAGE_SIZE, 'desc', $filter);
 			$activities = $data['data'];
 		} catch (\UnexpectedValueException $e) {
 			$this->l = $this->l10nFactory->get('activity');
diff --git a/lib/Data.php b/lib/Data.php
index d19359696..b10278b82 100644
--- a/lib/Data.php
+++ b/lib/Data.php
@@ -615,15 +615,8 @@ public function countDownloads(string $user, int $objectId, ?int $since = null):
 
 	/**
 	 * Verify that the filter is valid
-	 *
-	 * @param string $filterValue
-	 * @return string
 	 */
-	public function validateFilter($filterValue) {
-		if (!isset($filterValue)) {
-			return 'all';
-		}
-
+	public function validateFilter(string $filterValue): string {
 		switch ($filterValue) {
 			case 'filter':
 				return $filterValue;
diff --git a/tests/Controller/FeedControllerTest.php b/tests/Controller/FeedControllerTest.php
index 2a4394016..5112b111c 100644
--- a/tests/Controller/FeedControllerTest.php
+++ b/tests/Controller/FeedControllerTest.php
@@ -96,6 +96,9 @@ public function testShow(?string $acceptHeader, string $expectedHeader): void {
 		$this->data
 			->method('get')
 			->willReturn(['data' => []]);
+		$this->data
+			->method('validateFilter')
+			->willReturn('all');
 		if ($acceptHeader !== null) {
 			$this->request
 				->method('getHeader')
@@ -143,6 +146,54 @@ public function testShowNoToken(?string $acceptHeader, string $expectedHeader):
 		$this->assertStringContainsString($description, $renderedResponse);
 	}
 
+	public function testShowWithFilter(): void {
+		$this->mockUserSession('test');
+		$this->data
+			->method('validateFilter')
+			->with('files')
+			->willReturn('files');
+		$this->data
+			->expects($this->once())
+			->method('get')
+			->with($this->helper, $this->userSettings, 'test', 0, FeedController::DEFAULT_PAGE_SIZE, 'desc', 'files')
+			->willReturn(['data' => []]);
+
+		$templateResponse = $this->controller->show('files');
+		$this->assertInstanceOf(TemplateResponse::class, $templateResponse);
+	}
+
+	public function testShowWithInvalidFilter(): void {
+		$this->mockUserSession('test');
+		$this->data
+			->method('validateFilter')
+			->with('invalid_filter')
+			->willReturn('all');
+		$this->data
+			->expects($this->once())
+			->method('get')
+			->with($this->helper, $this->userSettings, 'test', 0, FeedController::DEFAULT_PAGE_SIZE, 'desc', 'all')
+			->willReturn(['data' => []]);
+
+		$templateResponse = $this->controller->show('invalid_filter');
+		$this->assertInstanceOf(TemplateResponse::class, $templateResponse);
+	}
+
+	public function testShowDefaultsToAllFilter(): void {
+		$this->mockUserSession('test');
+		$this->data
+			->method('validateFilter')
+			->with('all')
+			->willReturn('all');
+		$this->data
+			->expects($this->once())
+			->method('get')
+			->with($this->helper, $this->userSettings, 'test', 0, FeedController::DEFAULT_PAGE_SIZE, 'desc', 'all')
+			->willReturn(['data' => []]);
+
+		$templateResponse = $this->controller->show();
+		$this->assertInstanceOf(TemplateResponse::class, $templateResponse);
+	}
+
 	protected function mockUserSession(string $user): void {
 		$mockUser = $this->createMock(IUser::class);
 		$mockUser