diff --git a/extra/builder/util/util.factor b/extra/builder/util/util.factor
index 82514ca43d..55ff38d408 100644
--- a/extra/builder/util/util.factor
+++ b/extra/builder/util/util.factor
@@ -3,7 +3,7 @@ USING: kernel words namespaces classes parser continuations
        io io.files io.launcher io.sockets
        math math.parser
        combinators sequences splitting quotations arrays strings tools.time
-       sequences.deep new-slots accessors assocs.lib
+       sequences.deep accessors assocs.lib
        io.encodings.utf8
        combinators.cleave bake calendar calendar.format ;