diff --git a/lib/lepus/supervisor.rb b/lib/lepus/supervisor.rb
index 372ce0a..3d0c2fa 100644
--- a/lib/lepus/supervisor.rb
+++ b/lib/lepus/supervisor.rb
@@ -79,7 +79,7 @@ def supervise
 
         unless stopped?
           reap_and_replace_terminated_forks
-          interruptible_sleep(1.second)
+          interruptible_sleep(1)
         end
       end
     ensure