diff --git a/build/pre-compile.js b/build/pre-compile.js
index d4e984819..2bbc6af25 100644
--- a/build/pre-compile.js
+++ b/build/pre-compile.js
@@ -15,7 +15,6 @@
     'collection',
     'conditions',
     'ctor',
-    'ctorByClass',
     'errorClass',
     'errorProto',
     'guard',