diff --git a/code/queue.rb b/code/queue.rb
index f4227e3..f83748f 100644
--- a/code/queue.rb
+++ b/code/queue.rb
@@ -338,9 +338,9 @@ def run_queue_script!(msg)
           IO.for_fd(child_rd_fd).close rescue nil
 
           f = File.open(job_path + "/stdio.log", "a")
+          f.sync = true
           pfx = "#{Process.pid} - #{Time.now} -"
           f.write("\n#{pfx} RQ START - #{script_path}\n")
-          f.flush
 
           $stdin.close
           $stdout.reopen f