diff --git a/.drone.jsonnet b/.drone.jsonnet
index b98a9325224..d0cdb5f5184 100644
--- a/.drone.jsonnet
+++ b/.drone.jsonnet
@@ -1,8 +1,16 @@
 ## 1. Download/install drone binary:
-##    curl -L https://github.com/harness/drone-cli/releases/latest/download/drone_linux_amd64.tar.gz | tar zx
+##        curl -L https://github.com/harness/drone-cli/releases/latest/download/drone_linux_amd64.tar.gz | tar zx
 ## 2. Adjust the matrix as wished
-## 3. Run: ./drone  jsonnet --stream --format yml
-## 4. Commit the result
+## 3. Transform jsonnet to yml:
+##        ./drone  jsonnet --stream --format yml
+## 4. Export your drone token and the server:
+##        export DRONE_SERVER=https://drone.nextcloud.com export DRONE_TOKEN=…
+## 5. Sign off the changes:
+##        ./drone sign nextcloud/spreed --save
+## 6. Copy the new signature from .drone.yml to `hmac` field in this file
+## 7. Transform jsonnet to yml again (to transfer the signature correctly):
+##        ./drone  jsonnet --stream --format yml
+## 8. Commit the result
 
 local Pipeline(test_set, database, services) = {
 	kind: "pipeline",
@@ -15,7 +23,7 @@ local Pipeline(test_set, database, services) = {
 			environment: {
 				APP_NAME: "spreed",
 				CORE_BRANCH: "stable25",
-				GUESTS_BRANCH: "master",
+				GUESTS_BRANCH: "stable-2.5",
 				NOTIFICATIONS_BRANCH: "stable25",
 				DATABASEHOST: database
 			},
@@ -154,6 +162,6 @@ local PipelinePostgreSQL(test_set) = Pipeline(
 
 	{
 		kind: "signature",
-		hmac: "84d0676d3e4c9aba8fd34cea87fcad71664bbe2e1a5c5f379bd3e9c0c07f2193"
+		hmac: "3f632bada9ee7e7b504b4302e1a261856f1720432784f36b911b28302fa54a03"
 	},
 ]
diff --git a/.drone.yml b/.drone.yml
index 4dfdf8d169b..ee9172f7eb0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -24,7 +24,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-callapi
@@ -60,7 +60,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-chat
@@ -96,7 +96,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-chat-2
@@ -132,7 +132,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-command
@@ -169,7 +169,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-conversation
@@ -206,7 +206,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-conversation-2
@@ -242,7 +242,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-federation
@@ -278,7 +278,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-integration
@@ -314,7 +314,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-sharing
@@ -350,7 +350,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: sqlite
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-sharing-2
@@ -400,7 +400,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-callapi
@@ -451,7 +451,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-chat
@@ -502,7 +502,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-chat-2
@@ -553,7 +553,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-command
@@ -605,7 +605,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-conversation
@@ -657,7 +657,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-conversation-2
@@ -708,7 +708,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-federation
@@ -759,7 +759,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-integration
@@ -810,7 +810,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-sharing
@@ -861,7 +861,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: mysql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-sharing-2
@@ -907,7 +907,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-callapi
@@ -952,7 +952,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-chat
@@ -997,7 +997,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-chat-2
@@ -1042,7 +1042,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-command
@@ -1088,7 +1088,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-conversation
@@ -1134,7 +1134,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-conversation-2
@@ -1179,7 +1179,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-federation
@@ -1224,7 +1224,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-integration
@@ -1269,7 +1269,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-sharing
@@ -1314,7 +1314,7 @@ steps:
     APP_NAME: spreed
     CORE_BRANCH: stable25
     DATABASEHOST: pgsql
-    GUESTS_BRANCH: master
+    GUESTS_BRANCH: stable-2.5
     NOTIFICATIONS_BRANCH: stable25
   image: ghcr.io/nextcloud/continuous-integration-php8.0:latest
   name: integration-sharing-2
@@ -1325,5 +1325,5 @@ trigger:
   event:
   - push
 ---
-hmac: 84d0676d3e4c9aba8fd34cea87fcad71664bbe2e1a5c5f379bd3e9c0c07f2193
+hmac: 3f632bada9ee7e7b504b4302e1a261856f1720432784f36b911b28302fa54a03
 kind: signature
diff --git a/lib/Controller/PageController.php b/lib/Controller/PageController.php
index 4814952e4ee..742788c09b8 100644
--- a/lib/Controller/PageController.php
+++ b/lib/Controller/PageController.php
@@ -144,7 +144,7 @@ public function showCall(string $token): Response {
 	 */
 	public function authenticatePassword(string $token, string $password = ''): Response {
 		// This is the entry point from the `/call/{token}` URL which is hardcoded in the server.
-		return $this->index($token, '', $password);
+		return $this->pageHandler($token, '', $password);
 	}
 
 	/**
@@ -154,7 +154,7 @@ public function authenticatePassword(string $token, string $password = ''): Resp
 	 * @return Response
 	 */
 	public function notFound(): Response {
-		return $this->index();
+		return $this->pageHandler();
 	}
 
 	/**
@@ -164,7 +164,7 @@ public function notFound(): Response {
 	 * @return Response
 	 */
 	public function duplicateSession(): Response {
-		return $this->index();
+		return $this->pageHandler();
 	}
 
 	/**
@@ -173,13 +173,26 @@ public function duplicateSession(): Response {
 	 * @UseSession
 	 * @BruteForceProtection(action=talkRoomToken)
 	 *
+	 * @param string $token
+	 * @param string $callUser
+	 * @return TemplateResponse|RedirectResponse
+	 * @throws HintException
+	 */
+	public function index(string $token = '', string $callUser = ''): Response {
+		if ($callUser !== '') {
+			$token = '';
+		}
+		return $this->pageHandler($token, $callUser);
+	}
+
+	/**
 	 * @param string $token
 	 * @param string $callUser
 	 * @param string $password
 	 * @return TemplateResponse|RedirectResponse
 	 * @throws HintException
 	 */
-	public function index(string $token = '', string $callUser = '', string $password = ''): Response {
+	protected function pageHandler(string $token = '', string $callUser = '', string $password = ''): Response {
 		$user = $this->userSession->getUser();
 		if (!$user instanceof IUser) {
 			return $this->guestEnterRoom($token, $password);
diff --git a/tests/integration/run.sh b/tests/integration/run.sh
index 95f83f0a40e..2858be23011 100755
--- a/tests/integration/run.sh
+++ b/tests/integration/run.sh
@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 
 APP_NAME=spreed
-NOTIFICATIONS_BRANCH="master"
-GUESTS_BRANCH="master"
+NOTIFICATIONS_BRANCH="stable25"
+GUESTS_BRANCH="stable-2.5"
 
 APP_INTEGRATION_DIR=$PWD
 ROOT_DIR=${APP_INTEGRATION_DIR}/../../../..