diff --git a/core/Controller/AvatarController.php b/core/Controller/AvatarController.php
index 804000bf2a754..673ed1be05b80 100644
--- a/core/Controller/AvatarController.php
+++ b/core/Controller/AvatarController.php
@@ -131,7 +131,7 @@ public function getAvatarDark(string $userId, int $size) {
 	 *
 	 * @return JSONResponse|FileDisplayResponse
 	 */
-	public function getAvatar(string $userId, int $size, bool $darkTheme = false) {
+	public function getAvatar(string $userId, int $size) {
 		if ($size <= 64) {
 			if ($size !== 64) {
 				$this->logger->debug('Avatar requested in deprecated size ' . $size);
diff --git a/core/Controller/GuestAvatarController.php b/core/Controller/GuestAvatarController.php
index 09146ff3928db..dc4f81bd643c3 100644
--- a/core/Controller/GuestAvatarController.php
+++ b/core/Controller/GuestAvatarController.php
@@ -60,9 +60,9 @@ public function __construct(
 	 * @param string $size The desired avatar size, e.g. 64 for 64x64px
 	 * @return FileDisplayResponse|Http\Response
 	 */
-	public function getAvatar(string $guestName, string $size, ?bool $dark = false) {
+	public function getAvatar(string $guestName, string $size, ?bool $darkTheme = false) {
 		$size = (int) $size;
-		$dark = $dark === null ? false : $dark;
+		$darkTheme = $darkTheme ?? false;
 
 		if ($size <= 64) {
 			if ($size !== 64) {
@@ -78,7 +78,7 @@ public function getAvatar(string $guestName, string $size, ?bool $dark = false)
 
 		try {
 			$avatar = $this->avatarManager->getGuestAvatar($guestName);
-			$avatarFile = $avatar->getFile($size);
+			$avatarFile = $avatar->getFile($size, $darkTheme);
 
 			$resp = new FileDisplayResponse(
 				$avatarFile,
diff --git a/lib/private/Avatar/Avatar.php b/lib/private/Avatar/Avatar.php
index 1e6ebd7c61b81..9b9220936eb02 100644
--- a/lib/private/Avatar/Avatar.php
+++ b/lib/private/Avatar/Avatar.php
@@ -111,10 +111,10 @@ public function get(int $size = 64, bool $darkTheme = false) {
 	 * @return string
 	 *
 	 */
-	protected function getAvatarVector(int $size, bool $dark): string {
+	protected function getAvatarVector(int $size, bool $darkTheme): string {
 		$userDisplayName = $this->getDisplayName();
 		$fgRGB = $this->avatarBackgroundColor($userDisplayName);
-		$bgRGB = $fgRGB->alphaBlending(0.1, $dark ? new Color(0, 0, 0) : new Color(255, 255, 255));
+		$bgRGB = $fgRGB->alphaBlending(0.1, $darkTheme ? new Color(0, 0, 0) : new Color(255, 255, 255));
 		$fill = sprintf("%02x%02x%02x", $bgRGB->red(), $bgRGB->green(), $bgRGB->blue());
 		$fgFill = sprintf("%02x%02x%02x", $fgRGB->red(), $fgRGB->green(), $fgRGB->blue());
 		$text = $this->getAvatarText();
@@ -125,13 +125,13 @@ protected function getAvatarVector(int $size, bool $dark): string {
 	/**
 	 * Generate png avatar from svg with Imagick
 	 */
-	protected function generateAvatarFromSvg(int $size, bool $dark): ?string {
+	protected function generateAvatarFromSvg(int $size, bool $darkTheme): ?string {
 		if (!extension_loaded('imagick')) {
 			return null;
 		}
 		try {
 			$font = __DIR__ . '/../../../core/fonts/NotoSans-Regular.ttf';
-			$svg = $this->getAvatarVector($size, $dark);
+			$svg = $this->getAvatarVector($size, $darkTheme);
 			$avatar = new Imagick();
 			$avatar->setFont($font);
 			$avatar->readImageBlob($svg);
@@ -147,10 +147,10 @@ protected function generateAvatarFromSvg(int $size, bool $dark): ?string {
 	/**
 	 * Generate png avatar with GD
 	 */
-	protected function generateAvatar(string $userDisplayName, int $size, bool $dark): string {
+	protected function generateAvatar(string $userDisplayName, int $size, bool $darkTheme): string {
 		$text = $this->getAvatarText();
 		$textColor = $this->avatarBackgroundColor($userDisplayName);
-		$backgroundColor = $textColor->alphaBlending(0.1, $dark ? new Color(0, 0, 0) : new Color(255, 255, 255));
+		$backgroundColor = $textColor->alphaBlending(0.1, $darkTheme ? new Color(0, 0, 0) : new Color(255, 255, 255));
 
 		$im = imagecreatetruecolor($size, $size);
 		$background = imagecolorallocate(
diff --git a/lib/private/Repair/ClearGeneratedAvatarCache.php b/lib/private/Repair/ClearGeneratedAvatarCache.php
index 314299a052817..b180dc31b3e4e 100644
--- a/lib/private/Repair/ClearGeneratedAvatarCache.php
+++ b/lib/private/Repair/ClearGeneratedAvatarCache.php
@@ -30,35 +30,29 @@
 use OCP\Migration\IRepairStep;
 
 class ClearGeneratedAvatarCache implements IRepairStep {
-
-	/** @var AvatarManager */
-	protected $avatarManager;
-
-	/** @var IConfig */
-	private $config;
+	protected AvatarManager $avatarManager;
+	private IConfig $config;
 
 	public function __construct(IConfig $config, AvatarManager $avatarManager) {
 		$this->config = $config;
 		$this->avatarManager = $avatarManager;
 	}
 
-	public function getName() {
+	public function getName(): string {
 		return 'Clear every generated avatar on major updates';
 	}
 
 	/**
 	 * Check if this repair step should run
-	 *
-	 * @return boolean
 	 */
-	private function shouldRun() {
+	private function shouldRun(): bool {
 		$versionFromBeforeUpdate = $this->config->getSystemValue('version', '0.0.0.0');
 
-		// was added to 15.0.0.4
-		return version_compare($versionFromBeforeUpdate, '15.0.0.4', '<=');
+		// was added to 25.0.0.8
+		return version_compare($versionFromBeforeUpdate, '25.0.0.8', '<=');
 	}
 
-	public function run(IOutput $output) {
+	public function run(IOutput $output): void {
 		if ($this->shouldRun()) {
 			try {
 				$this->avatarManager->clearCachedAvatars();