diff --git a/lib/Push.php b/lib/Push.php
index 2ddb0e0f8..5fbbbdca8 100644
--- a/lib/Push.php
+++ b/lib/Push.php
@@ -66,7 +66,7 @@ class Push {
 	 */
 	protected array $userStatuses = [];
 	/**
-	 * @psalm-var array<string, list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>>
+	 * @psalm-var array<string, list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}>>
 	 */
 	protected array $userWebPushDevices = [];
 	/**
@@ -175,11 +175,8 @@ public function flushPayloads(): void {
 	}
 
 	/**
-	 * @param array $devices
-	 * @psalm-param $devices list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>
-	 * @param string $app
-	 * @return array
-	 * @psalm-return list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>
+	 * @psalm-param list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}> $devices
+	 * @psalm-return list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}>
 	 */
 	public function filterWebPushDeviceList(array $devices, string $app): array {
 		// Consider all 3 options as 'talk'
@@ -187,11 +184,11 @@ public function filterWebPushDeviceList(array $devices, string $app): array {
 			$app = 'talk';
 		}
 
-		return array_filter($devices, function ($device) use ($app) {
+		return array_values(array_filter($devices, function ($device) use ($app) {
 			$appTypes = explode(',', $device['app_types']);
 			return $device['activated'] && (\in_array($app, $appTypes)
 				|| (\in_array('all', $appTypes) && !\in_array('-' . $app, $appTypes)));
-		});
+		}));
 	}
 
 
@@ -299,6 +296,9 @@ public function pushToDevice(int $id, INotification $notification, ?OutputInterf
 		$this->proxyPushToDevice($id, $user, $proxyDevices, $notification, $output);
 	}
 
+	/**
+	 * @param list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}> $devices
+	 */
 	public function webPushToDevice(int $id, IUser $user, array $devices, INotification $notification, ?OutputInterface $output = null): void {
 		if (empty($devices)) {
 			$this->printInfo('<comment>No web push devices found for user</comment>');
@@ -1042,7 +1042,7 @@ protected function getProxyDevicesForUsers(array $userIds): array {
 
 	/**
 	 * @param string $uid
-	 * @return list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>
+	 * @return list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}>
 	 */
 	protected function getWebPushDevicesForUser(string $uid): array {
 		$query = $this->db->getQueryBuilder();
@@ -1051,6 +1051,7 @@ protected function getWebPushDevicesForUser(string $uid): array {
 			->where($query->expr()->eq('uid', $query->createNamedParameter($uid)));
 
 		$result = $query->executeQuery();
+		/** @var list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}> $devices */
 		$devices = $result->fetchAll();
 		$result->closeCursor();
 
@@ -1059,7 +1060,7 @@ protected function getWebPushDevicesForUser(string $uid): array {
 
 	/**
 	 * @param string[] $userIds
-	 * @return array<string, list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>>
+	 * @return array<string, list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string}>>
 	 */
 	protected function getWebPushDevicesForUsers(array $userIds): array {
 		$query = $this->db->getQueryBuilder();
@@ -1070,6 +1071,7 @@ protected function getWebPushDevicesForUsers(array $userIds): array {
 		$devices = [];
 		$result = $query->executeQuery();
 		while ($row = $result->fetch()) {
+			/** @psalm-var array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, app_types: string, activated: bool, activation_token: string} $row */
 			if (!isset($devices[$row['uid']])) {
 				$devices[$row['uid']] = [];
 			}
diff --git a/lib/WebPushClient.php b/lib/WebPushClient.php
index e3549413e..ce9870e7c 100644
--- a/lib/WebPushClient.php
+++ b/lib/WebPushClient.php
@@ -118,7 +118,7 @@ public function notify(string $endpoint, string $uaPublicKey, string $auth, stri
 		// the callback could be defined by the caller
 		// For the moment, it is used during registration only - no need to catch 404 &co
 		// as the registration isn't activated
-		$callback = function ($r) {
+		$callback = function ($r): void {
 		};
 		$c->flushPooled($callback);
 	}
diff --git a/tests/psalm-baseline.xml b/tests/psalm-baseline.xml
index 3ffa25ccb..bde038bda 100644
--- a/tests/psalm-baseline.xml
+++ b/tests/psalm-baseline.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<files psalm-version="6.15.0@204d06619833a297b402cbc66be7f2df74437db4">
+<files psalm-version="6.15.1@28dc127af1b5aecd52314f6f645bafc10d0e11f9">
   <file src="lib/Controller/PushController.php">
     <UndefinedClass>
       <code><![CDATA[$this->identityProof]]></code>
@@ -21,26 +21,16 @@
   </file>
   <file src="lib/Push.php">
     <LessSpecificReturnStatement>
-      <code><![CDATA[$devices]]></code>
-      <code><![CDATA[$devices]]></code>
       <code><![CDATA[$devices]]></code>
       <code><![CDATA[$devices]]></code>
       <code><![CDATA[$otherDevices]]></code>
       <code><![CDATA[$otherDevices]]></code>
       <code><![CDATA[$talkDevices]]></code>
-      <code><![CDATA[array_filter($devices, function ($device) use ($app) {
-			$appTypes = explode(',', $device['app_types']);
-			return $device['activated'] && (\in_array($app, $appTypes)
-				|| (\in_array('all', $appTypes) && !\in_array('-' . $app, $appTypes)));
-		})]]></code>
     </LessSpecificReturnStatement>
     <MoreSpecificReturnType>
       <code><![CDATA[array<string, list<array{id: int, uid: string, token: int, deviceidentifier: string, devicepublickey: string, devicepublickeyhash: string, pushtokenhash: string, proxyserver: string, apptype: string}>>]]></code>
-      <code><![CDATA[array<string, list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>>]]></code>
       <code><![CDATA[list<array{id: int, uid: string, token: int, deviceidentifier: string, devicepublickey: string, devicepublickeyhash: string, pushtokenhash: string, proxyserver: string, apptype: string}>]]></code>
       <code><![CDATA[list<array{id: int, uid: string, token: int, deviceidentifier: string, devicepublickey: string, devicepublickeyhash: string, pushtokenhash: string, proxyserver: string, apptype: string}>]]></code>
-      <code><![CDATA[list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>]]></code>
-      <code><![CDATA[list<array{id: int, uid: string, token: int, endpoint: string, ua_public: string, auth: string, appTypes: string, activated: bool, activation_token: string}>]]></code>
     </MoreSpecificReturnType>
     <UndefinedClass>
       <code><![CDATA[$e]]></code>