diff --git a/lib/Service/BanService.php b/lib/Service/BanService.php
index 3b98784f6b4..883f1629dea 100644
--- a/lib/Service/BanService.php
+++ b/lib/Service/BanService.php
@@ -176,7 +176,7 @@ public function throwIfActorIsBanned(Room $room, ?string $userId): void {
 			}
 		}
 
-		if (!in_array($actorType, [Attendee::ACTOR_GUESTS, Attendee::ACTOR_EMAILS], true)) {
+		if ($actorType !== Attendee::ACTOR_GUESTS) {
 			return;
 		}