diff --git a/src/DeviceListener.js b/src/DeviceListener.js
index d948911d7c..d2ba8219db 100644
--- a/src/DeviceListener.js
+++ b/src/DeviceListener.js
@@ -78,6 +78,8 @@ export default class DeviceListener {
         this._dismissedThisDeviceToast = false;
         this._keyBackupInfo = null;
         this._keyBackupFetchedAt = null;
+        this._ourDeviceIdsAtStart = null;
+        this._displayingToastsForDeviceIds = new Set();
     }
 
     /**