diff --git a/src/SlidingSyncManager.ts b/src/SlidingSyncManager.ts
index eeac10b603..8c0cb3e443 100644
--- a/src/SlidingSyncManager.ts
+++ b/src/SlidingSyncManager.ts
@@ -233,7 +233,7 @@ export class SlidingSyncManager {
             subscriptions.delete(roomId);
         }
         const room = this.client?.getRoom(roomId);
-        let shouldLazyLoad = !this.client?.isRoomEncrypted(roomId);
+        let shouldLazyLoad = !(await this.client?.getCrypto()?.isEncryptionEnabledInRoom(roomId));
         if (!room) {
             // default to safety: request all state if we can't work it out. This can happen if you
             // refresh the app whilst viewing a room: we call setRoomVisible before we know anything