diff --git a/lib/do_keys.js b/lib/do_keys.js
index 776431a..add02bf 100644
--- a/lib/do_keys.js
+++ b/lib/do_keys.js
@@ -22,7 +22,7 @@ function do_keys(subcmd, opts, args, callback) {
         }
 
         if (opts.json) {
-            console.log(JSON.stringify(keys));
+            console.log(common.jsonStream(keys));
         } else {
             // pretty print
             keys.forEach(function (key) {