diff --git a/racket/src/worksp/csbuild.rkt b/racket/src/worksp/csbuild.rkt
index d18c6c3f3c..d7b0425916 100644
--- a/racket/src/worksp/csbuild.rkt
+++ b/racket/src/worksp/csbuild.rkt
@@ -297,7 +297,9 @@
           "../cs/c/gen-system.rkt"
           (format "../../lib/system~a.rktd" cs-suffix)
           machine
-          "machine")
+          "machine"
+          "../cs/c"
+          "")
 
 (when install-boot?
   (bootstrap-racket! "../cs/c/add-terminator.rkt"