diff --git a/get-module-bytecode.rkt b/get-module-bytecode.rkt
index 56ec058..4326366 100644
--- a/get-module-bytecode.rkt
+++ b/get-module-bytecode.rkt
@@ -77,6 +77,7 @@
 (define (get-compiled-code-from-port ip)
   ;(printf "get-compiled-code-from-port\n")
   (parameterize ([read-accept-reader #t]
+                 [read-accept-lang #t]
                  ;; Note: we're trying to preserve the context, to avoid code expansion.
                  [compile-context-preservation-enabled #t]
                  [current-namespace base-namespace])
diff --git a/js-assembler/check-valid-module-source.rkt b/js-assembler/check-valid-module-source.rkt
index ac91eba..3e621f2 100644
--- a/js-assembler/check-valid-module-source.rkt
+++ b/js-assembler/check-valid-module-source.rkt
@@ -71,7 +71,8 @@
                        (fprintf (current-report-port) "\nFor reference, the error message produced when trying to read ~e is:\n\n" module-source-path)
                        (fprintf (current-report-port) "~a\n" (exn-message exn))
                        (abort-abort))])
-      (parameterize ([read-accept-reader #t])
+      (parameterize ([read-accept-reader #t]
+                     [read-accept-lang #t])
         (call-with-input-file* module-source-path
                                (lambda (ip)
                                  (port-count-lines! ip)