diff --git a/lib/Controller/RoomController.php b/lib/Controller/RoomController.php
index 37482f1aaa8..18b8770522a 100644
--- a/lib/Controller/RoomController.php
+++ b/lib/Controller/RoomController.php
@@ -231,7 +231,7 @@ public function getSingleRoom(string $token): DataResponse {
 		$includeLastMessage = !$isSIPBridgeRequest;
 
 		try {
-			$room = $this->manager->getRoomForUserByToken($token, $this->userId, $includeLastMessage);
+			$room = $this->manager->getRoomForUserByToken($token, $this->userId, $includeLastMessage, $isSIPBridgeRequest);
 
 			$participant = null;
 			try {
diff --git a/lib/Manager.php b/lib/Manager.php
index c4488261d7b..055eee0caf4 100644
--- a/lib/Manager.php
+++ b/lib/Manager.php
@@ -392,10 +392,11 @@ public function getRoomForUser(int $roomId, ?string $userId): Room {
 	 * @param string $token
 	 * @param string|null $userId
 	 * @param bool $includeLastMessage
+	 * @param bool $isSIPBridgeRequest
 	 * @return Room
 	 * @throws RoomNotFoundException
 	 */
-	public function getRoomForUserByToken(string $token, ?string $userId, bool $includeLastMessage = false): Room {
+	public function getRoomForUserByToken(string $token, ?string $userId, bool $includeLastMessage = false, bool $isSIPBridgeRequest = false): Room {
 		$query = $this->db->getQueryBuilder();
 		$query->select('r.*')
 			->selectAlias('r.id', 'r_id')
@@ -441,7 +442,7 @@ public function getRoomForUserByToken(string $token, ?string $userId, bool $incl
 			$room->setParticipant($row['actor_id'], $this->createParticipantObject($room, $row));
 		}
 
-		if ($room->getType() === Room::PUBLIC_CALL) {
+		if ($isSIPBridgeRequest || $room->getType() === Room::PUBLIC_CALL) {
 			return $room;
 		}