diff --git a/src/matrix/e2ee/DeviceTracker.js b/src/matrix/e2ee/DeviceTracker.js
index 484a6d0b..55f666e4 100644
--- a/src/matrix/e2ee/DeviceTracker.js
+++ b/src/matrix/e2ee/DeviceTracker.js
@@ -202,6 +202,9 @@ export class DeviceTracker {
     async _queryKeys(userIds, hsApi, log) {
         // TODO: we need to handle the race here between /sync and /keys/query just like we need to do for the member list ...
         // there are multiple requests going out for /keys/query though and only one for /members
+        // So, while doing /keys/query, writeDeviceChanges should add userIds marked as outdated to a list
+        // when /keys/query returns, we should check that list and requery if we queried for a given user.
+        // and then remove the list.
 
         const deviceKeyResponse = await hsApi.queryKeys({
             "timeout": 10000,