diff --git a/server/rsvp/session.go b/server/rsvp/session.go
index 4389d5a..4da6ed0 100644
--- a/server/rsvp/session.go
+++ b/server/rsvp/session.go
@@ -18,7 +18,11 @@ func (s *Session) FlashGet() any {
 }
 
 func (s *Session) FlashPeek() any {
-	list, _ := s.inner.Values["_flash"].([]any)
+	flash, ok := s.inner.Values["_flash"]
+	if !ok {
+		return nil
+	}
+	list := flash.([]any)
 	if len(list) < 1 {
 		return nil
 	} else {