diff --git a/greenhouse-effect_en.html b/greenhouse-effect_en.html
index 3e42600f..7b0b67ff 100644
--- a/greenhouse-effect_en.html
+++ b/greenhouse-effect_en.html
@@ -99,7 +99,6 @@
   let preloads = [
     '../joist/js/splash.js',
     '../sherpa/lib/jquery-2.1.0.js',
-    '../sherpa/lib/jsondiffpatch-v0.3.11.umd.js',
     '../sherpa/lib/lodash-4.17.4.js',
     '../sherpa/lib/FileSaver-b8054a2.js',
     '../sherpa/lib/himalaya-1.1.0.js',