diff --git a/profile-lib/raco.rkt b/profile-lib/raco.rkt
index 9c097d3..16f94c6 100644
--- a/profile-lib/raco.rkt
+++ b/profile-lib/raco.rkt
@@ -61,3 +61,5 @@
          (profile-thunk t
                         #:threads threads?
                         #:use-errortrace? use-errortrace?)]))
+
+(module test racket/base) ; don't run for testing