diff --git a/demo/shared/js/dune b/demo/shared/js/dune
index cbc2ed0c5..ea3c48974 100644
--- a/demo/shared/js/dune
+++ b/demo/shared/js/dune
@@ -3,6 +3,6 @@
  (modes melange)
  (libraries reason-react)
  (preprocess
-  (pps melange.ppx browser_ppx reason-react-ppx)))
+  (pps melange.ppx browser_ppx -js reason-react-ppx)))
 
 (copy_files# "../native/lib/*.re")
diff --git a/demo/shared/native/lib/MelRaw.re b/demo/shared/native/lib/MelRaw.re
index 7200bc170..962fae5d6 100644
--- a/demo/shared/native/lib/MelRaw.re
+++ b/demo/shared/native/lib/MelRaw.re
@@ -32,4 +32,7 @@ let%browser_only initWebsocket: unit => unit = [%mel.raw
         console.debug("Live reload: WebSocket error:", event);
       };
     }
-|}];
+|}
+];
+
+let x = 22;