diff --git a/src/racket/gc2/setup.ss b/src/racket/gc2/setup.ss
index d2b69fa04d..6b30075d6c 100644
--- a/src/racket/gc2/setup.ss
+++ b/src/racket/gc2/setup.ss
@@ -84,6 +84,7 @@
        mzscheme/lang/reader
        scheme/base/lang/reader
        scheme/lang/reader
+       scheme/private/lang/reader
        scheme/private/provider/lang/reader
        racket/base/lang/reader
        racket/private/lang/reader