diff --git a/collects/scribblings/htdp-langs/prim-ops.rkt b/collects/scribblings/htdp-langs/prim-ops.rkt
index 3d78579f8c..6fdd02885c 100644
--- a/collects/scribblings/htdp-langs/prim-ops.rkt
+++ b/collects/scribblings/htdp-langs/prim-ops.rkt
@@ -5,7 +5,7 @@
          scribble/struct
          scribble/racket
          racket/list
-         racket/pretty
+         scheme/pretty
          syntax/docprovide
          (for-syntax racket/base)
          )