diff --git a/lib/crono/job.rb b/lib/crono/job.rb
index c7081a2..28a766b 100644
--- a/lib/crono/job.rb
+++ b/lib/crono/job.rb
@@ -11,7 +11,8 @@ module Crono
     end
 
     def next
-      period.next(since: last_performed_at)
+      next_time = period.next(since: last_performed_at)
+      next_time.past? ? period.next : next_time
     end
 
     def description