diff --git a/scripts/build.clj b/scripts/build.clj
index 7205f1420..9d1f320fd 100644
--- a/scripts/build.clj
+++ b/scripts/build.clj
@@ -13,7 +13,7 @@
     :output-to "out/tests.js"
     :output-dir "out"
     :parallel-build false
-    :optimizations :advanced
+    :optimizations :whitespace
     :language-in  :ecmascript5
     :language-out :ecmascript5
     :target :nodejs