diff --git a/racket/collects/racket/private/class-c-old.rkt b/racket/collects/racket/private/class-c-old.rkt
index 1dbdad55d3..dcd3a1848b 100644
--- a/racket/collects/racket/private/class-c-old.rkt
+++ b/racket/collects/racket/private/class-c-old.rkt
@@ -14,7 +14,8 @@
          make-wrapper-object
          check-object-contract
          (for-syntax parse-class/c-specs)
-         (struct-out internal-class/c))
+         (struct-out internal-class/c)
+         just-check-existence just-check-existence?)
 
 (define undefined (letrec ([x x]) x))