diff --git a/lib/server/beautify.js b/lib/server/beautify.js
index 594ca23e..a3b6203d 100644
--- a/lib/server/beautify.js
+++ b/lib/server/beautify.js
@@ -13,6 +13,9 @@
         HOME_UNIX       = process.env.HOME,
         HOME            = (HOME_UNIX || HOME_WIN) + '/',
         
+        EXT             = ['js', 'css', 'html'],
+        ERROR_MSG       = 'File type "{{ ext }}" not supported.',
+        ERROR_MSG_INST  = 'Beautify not installed',
         ConfigPath      = DIR   + 'json/beautify.json',
         ConfigHome      = HOME  + '.beautify.json',
         
@@ -21,17 +24,18 @@
             tryRequire(ConfigPath, {log: true}) || {};
     
     module.exports  = function(name, callback) {
-        var EXT     = ['js', 'css', 'html'],
-            ext     = path
+        var ext     = path
                 .extname(name)
                 .slice(1),
             
             is      = ~EXT.indexOf(ext);
             
         if (!beautify)
-            callback(Error('Beautify not installed'));
+            callback(Error(ERROR_MSG_INST));
         else if (!is)
-            callback(Error('Supported file types: ' + EXT.join(', ')));
+            callback(Error(Util.render(ERROR_MSG, {
+                ext : ext
+            })));
         else
             fs.readFile(name, 'utf8', function(error, data) {
                 var result;