diff --git a/collects/tests/mzscheme/all.ss b/collects/tests/mzscheme/all.ss
index fec7455bd2..13397c9dcc 100644
--- a/collects/tests/mzscheme/all.ss
+++ b/collects/tests/mzscheme/all.ss
@@ -1,5 +1,5 @@
 
-;; (load-relative "mz.ss")
-;; (load-relative "mzlib.ss")
-;; (load-relative "boundmap-test.ss")
+(load-relative "mz.ss")
+(load-relative "mzlib.ss")
+(load-relative "boundmap-test.ss")
 (load-relative "foreign-test.ss")