diff --git a/lib/server/commander.js b/lib/server/commander.js
index 137a53c6..7495cca5 100644
--- a/lib/server/commander.js
+++ b/lib/server/commander.js
@@ -21,7 +21,7 @@
         var isString = Util.isString(path);
         
         if (!isString)
-            Util.exec(callback, "First parameter should be a string");
+            Util.exec(callback, 'First parameter should be a string');
         else
             fs.readdir(path, readDir.bind(null, {
                 callback    : callback,
@@ -191,7 +191,7 @@
         for (i = 0; i < n; i++) {
             current = json[i];
             
-            if (current.size === "dir")
+            if (current.size === 'dir')
                 dirs.push(current);
             else 
                 files.push(current);