diff --git a/collects/tests/racket/benchmarks/shootout/auto.rkt b/collects/tests/racket/benchmarks/shootout/auto.rkt
index eb55cd8b71..9a2c40e4c8 100755
--- a/collects/tests/racket/benchmarks/shootout/auto.rkt
+++ b/collects/tests/racket/benchmarks/shootout/auto.rkt
@@ -149,7 +149,7 @@ exec racket -qu "$0" ${1+"$@"}
       spectralnorm-unsafe
       strcat
       sumcol
-      thread-ring
+      ;; thread-ring ; calls exit, so won't display running time
       wc
       wordfreq))
 
diff --git a/collects/tests/racket/benchmarks/shootout/run.rkt b/collects/tests/racket/benchmarks/shootout/run.rkt
index d33ea76ede..088f4d5cbf 100644
--- a/collects/tests/racket/benchmarks/shootout/run.rkt
+++ b/collects/tests/racket/benchmarks/shootout/run.rkt
@@ -51,7 +51,7 @@
       ("spectralnorm-unsafe" "1000")
       ("strcat" "50000000")
       ("sumcol" #f ,(lambda () (mk-sumcol-input)))
-      ("thread-ring" "1000000")
+      ("thread-ring" "1000000") ; calls exit, so won't display running time
       ("wc" #f ,(lambda () (mk-wc-input)))
       ("wordfreq" #f ,(lambda () (mk-wordfreq-input)))
       ))