diff --git a/federationapi/consumers/keychange.go b/federationapi/consumers/keychange.go
index 0ece18e97..09dd8c7eb 100644
--- a/federationapi/consumers/keychange.go
+++ b/federationapi/consumers/keychange.go
@@ -128,6 +128,7 @@ func (t *KeyChangeConsumer) onDeviceKeyMessage(m api.DeviceMessage) bool {
 	}
 
 	if len(destinations) == 0 {
+		logger.WithField("num_rooms", len(queryRes.RoomIDs)).Debug("user is in no federated rooms")
 		return true
 	}
 	// Pack the EDU and marshal it
diff --git a/federationapi/internal/perform.go b/federationapi/internal/perform.go
index 24a4d2f10..79d703122 100644
--- a/federationapi/internal/perform.go
+++ b/federationapi/internal/perform.go
@@ -246,6 +246,7 @@ func (r *FederationInternalAPI) performJoinUsingServer(
 	if err != nil {
 		return fmt.Errorf("JoinedHostsFromEvents: failed to get joined hosts: %s", err)
 	}
+	logrus.WithField("hosts", joinedHosts).WithField("room", roomID).Info("Joined federated room with hosts")
 	if _, err = r.db.UpdateRoom(context.Background(), roomID, "", event.EventID(), joinedHosts, nil); err != nil {
 		return fmt.Errorf("UpdatedRoom: failed to update room with joined hosts: %s", err)
 	}