diff --git a/lib/server/commander.js b/lib/server/commander.js
index c2a50924..2189a27e 100644
--- a/lib/server/commander.js
+++ b/lib/server/commander.js
@@ -12,7 +12,8 @@
             
     var main                = global.cloudcmd.main,
         fs                  = main.fs,
-        Util                = main.util;
+        Util                = main.util,
+        checkParams         = main.checkCallBackParams;
     
     exports.getDirContent = function(pPath, pCallBack) {
         var lRet = Util.isString(pPath);
@@ -155,10 +156,6 @@
         }
     }
     
-    function checkParams(pParams) {
-        return Util.checkObj(pParams, ['error', 'data', 'params']);
-    }
-    
     function getDirPath(pPath) {
         var lRet = pPath;