diff --git a/bot/settings.go b/bot/settings.go
index 01b0955..24cd418 100644
--- a/bot/settings.go
+++ b/bot/settings.go
@@ -39,8 +39,8 @@ func (s settings) Allowed(noowner bool, userID id.UserID) bool {
 func (s settings) Get(key string) string {
 	value := s[strings.ToLower(strings.TrimSpace(key))]
 
-	sanitizer, exists := sanitizers[key]
-	if exists {
+	sanitizer, ok := sanitizers[key]
+	if ok {
 		return sanitizer(value)
 	}
 	return value
diff --git a/bot/sync.go b/bot/sync.go
index 79cf381..0781a39 100644
--- a/bot/sync.go
+++ b/bot/sync.go
@@ -92,8 +92,8 @@ func (b *Bot) onEncryptedMessage(evt *event.Event) {
 func (b *Bot) onBotJoin(evt *event.Event, hub *sentry.Hub) {
 	// Workaround for membership=join events which are delivered to us twice,
 	// as described in this bug report: https://github.com/matrix-org/synapse/issues/9768
-	_, exists := b.handledJoinEvents.LoadOrStore(evt.ID, true)
-	if exists {
+	_, ok := b.handledJoinEvents.LoadOrStore(evt.ID, true)
+	if ok {
 		b.log.Info("Suppressing already handled event %s", evt.ID)
 		return
 	}