diff --git a/lib/cli/options.js b/lib/cli/options.js
index ecc2d248b..72961ab30 100644
--- a/lib/cli/options.js
+++ b/lib/cli/options.js
@@ -7,7 +7,7 @@ var logOptions = {
         .keySeq()
         .map(function(s) {
             return s.toLowerCase();
-        }),
+        }).toJS(),
     defaults: 'info'
 };