diff --git a/lib/client/edit.js b/lib/client/edit.js
index aa1ad37f..498bc94f 100644
--- a/lib/client/edit.js
+++ b/lib/client/edit.js
@@ -171,23 +171,29 @@ var CloudCmd, Util, DOM, CloudFunc, ace, DiffProto, diff_match_patch;
                 lValue      = Ace.getValue();
             
             CloudCmd.getConfig(function(config) {
-                var isDiff = config.diff;
+                var isDiff      = config.diff;
                 
                 Util.ifExec(!isDiff, function(patch) {
                     var query,
+                        MAX_SIZE    = CloudFunc.MAX_FILE_SIZE,
+                        
+                        length      = lValue.length,
+                        
+                        isLength    = length > MAX_SIZE,
                         isAllowed   = DOM.Storage.isAllowed();
                     
                     Value           = lValue;
                     
-                    Util.ifExec(!isAllowed, function() {
+                    Util.ifExec(isLength && !isAllowed, function() {
                             DOM.RESTful.save(lPath,  lValue, onSave, query);
                         }, function(callback) {
                             DOM.checkStorageHash(lPath, function(error, equal) {
                                 var isString    = Util.isString(patch),
-                                    lessLength  = patch.length < lValue.length;
+                                    patchLength = patch.length,
+                                    lessLength  = patchLength < length;
                                 
                                 if (!error) {
-                                    if (equal && isString && patch.length && lessLength) {
+                                    if (equal && isString && patchLength && lessLength) {
                                         lValue  = patch;
                                         query   = '?patch';
                                     }
diff --git a/lib/cloudfunc.js b/lib/cloudfunc.js
index c749a047..742220ed 100644
--- a/lib/cloudfunc.js
+++ b/lib/cloudfunc.js
@@ -48,6 +48,8 @@ var Util;
         this.CHANNEL_CONSOLE        = 'console-data';
         this.CHANNEL_TERMINAL       = 'terminal-data';
         this.CHANNEL_TERMINAL_RESIZE= 'terminal-resize';
+        this.MAX_FILE_SIZE          = 500 * 1024;
+        
         
         this.addListener            = function(name, func, allListeners, socket) {
              var listeners, obj;
diff --git a/lib/server/rest/fs/put.js b/lib/server/rest/fs/put.js
index e5fe27f4..86a34dfb 100644
--- a/lib/server/rest/fs/put.js
+++ b/lib/server/rest/fs/put.js
@@ -48,7 +48,7 @@
         
         case 'patch':
             dir.getSize(name, function(error, size) {
-                var MAX_SIZE = 100 * 1024;
+                var MAX_SIZE = CloudFunc.MAX_FILE_SIZE;
                 
                 if (!error)
                     if (size < MAX_SIZE)
@@ -56,7 +56,7 @@
                             patchFile(patch);
                         });
                     else
-                        error = 'File is to big.';
+                        error = 'File is to big. Disable diff.';
                 
                 if (error)
                     func(error);