diff --git a/make.js b/make.js
index e64f94016..faa202427 100644
--- a/make.js
+++ b/make.js
@@ -996,7 +996,8 @@ target.b2g = function() {
       ['extensions/b2g/viewer.css', B2G_BUILD_CONTENT_DIR + '/web'],
       ['extensions/b2g/viewer.js', B2G_BUILD_CONTENT_DIR + '/web'],
       ['build/dist/*', B2G_BUILD_CONTENT_DIR + '/web/bower_components']
-    ]
+    ],
+    preprocess: []
   };
   builder.build(setup);