diff --git a/lib/Controller/SignalingController.php b/lib/Controller/SignalingController.php
index d2e8a9f22bf..a92e60745c8 100644
--- a/lib/Controller/SignalingController.php
+++ b/lib/Controller/SignalingController.php
@@ -25,7 +25,6 @@
 
 namespace OCA\Talk\Controller;
 
-use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
 use OCA\Talk\Config;
 use OCA\Talk\Events\SignalingEvent;
 use OCA\Talk\Exceptions\RoomNotFoundException;
@@ -43,6 +42,7 @@
 use OCP\AppFramework\Http\DataResponse;
 use OCP\AppFramework\OCSController;
 use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\DB\Exception;
 use OCP\EventDispatcher\IEventDispatcher;
 use OCP\Http\Client\IClientService;
 use OCP\IDBConnection;
@@ -647,7 +647,7 @@ private function backendRoom(array $roomRequest): DataResponse {
 			if ($sessionId && !$participant->getSession() instanceof Session) {
 				try {
 					$session = $this->sessionService->createSessionForAttendee($participant->getAttendee(), $sessionId);
-				} catch (UniqueConstraintViolationException $e) {
+				} catch (Exception $e) {
 					return new DataResponse([
 						'type' => 'error',
 						'error' => [
diff --git a/lib/Service/SessionService.php b/lib/Service/SessionService.php
index 4b4f6e6c0fa..6dbf1e3fbb9 100644
--- a/lib/Service/SessionService.php
+++ b/lib/Service/SessionService.php
@@ -23,10 +23,10 @@
 
 namespace OCA\Talk\Service;
 
-use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
 use OCA\Talk\Model\Attendee;
 use OCA\Talk\Model\Session;
 use OCA\Talk\Model\SessionMapper;
+use OCP\DB\Exception;
 use OCP\DB\QueryBuilder\IQueryBuilder;
 use OCP\IDBConnection;
 use OCP\Security\ISecureRandom;
@@ -90,7 +90,7 @@ public function getAllSessionsForAttendee(Attendee $attendee): array {
 	 * @param Attendee $attendee
 	 * @param string $forceSessionId
 	 * @return Session
-	 * @throws UniqueConstraintViolationException
+	 * @throws Exception
 	 */
 	public function createSessionForAttendee(Attendee $attendee, string $forceSessionId = ''): Session {
 		$session = new Session();
@@ -98,12 +98,7 @@ public function createSessionForAttendee(Attendee $attendee, string $forceSessio
 
 		if ($forceSessionId !== '') {
 			$session->setSessionId($forceSessionId);
-			try {
-				$this->sessionMapper->insert($session);
-			} catch (UniqueConstraintViolationException $e) {
-				// The HPB told us to use a session which exists already…
-				throw $e;
-			}
+			$this->sessionMapper->insert($session);
 		} else {
 			while (true) {
 				$sessionId = $this->secureRandom->generate(255);
@@ -111,8 +106,11 @@ public function createSessionForAttendee(Attendee $attendee, string $forceSessio
 				try {
 					$this->sessionMapper->insert($session);
 					break;
-				} catch (UniqueConstraintViolationException $e) {
+				} catch (Exception $e) {
 					// 255 chars are not unique? Try again...
+					if ($e->getReason() === Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
+						throw $e;
+					}
 				}
 			}
 		}