diff --git a/lib/API.js b/lib/API.js
index ced8e6f10..4a5f92e71 100644
--- a/lib/API.js
+++ b/lib/API.js
@@ -1667,7 +1667,7 @@ class API {
       }
 
       if (debug) {
-        process.stdout.write(util.inspect(list, false, null, false));
+        process.stdout.write(JSON.stringify(list, null, 2));
       }
       else {
         process.stdout.write(JSON.stringify(list));