diff --git a/collects/tests/mred/paramz.ss b/collects/tests/mred/paramz.ss
index 7a33a358..976dba4f 100644
--- a/collects/tests/mred/paramz.ss
+++ b/collects/tests/mred/paramz.ss
@@ -50,7 +50,7 @@
   (st #t d is-shown?)
   (thread-suspend t)
   (stv d show #f)
-  (st #t d is-shown?)
+  (st #f d is-shown?)
   (thread-resume t)
   (thread-wait t)
   (st #f d is-shown?)