diff --git a/lib/manager.js b/lib/manager.js
index 7f856f8afd..d974afc4c8 100644
--- a/lib/manager.js
+++ b/lib/manager.js
@@ -141,7 +141,7 @@ Manager.prototype.__defineGetter__('log', function () {
   if (this.disabled('log')) return;
 
   var logger = this.get('logger');
-  logger.level = this.get('log level');
+  logger.level = this.get('log level') || -1;
 
   return logger;
 });