diff --git a/src/mibew/libs/classes/Mibew/Controller/Chat/ThreadController.php b/src/mibew/libs/classes/Mibew/Controller/Chat/ThreadController.php
index f9311937..6aa1289d 100644
--- a/src/mibew/libs/classes/Mibew/Controller/Chat/ThreadController.php
+++ b/src/mibew/libs/classes/Mibew/Controller/Chat/ThreadController.php
@@ -37,12 +37,7 @@ class ThreadController extends AbstractController
     public function updateAction(Request $request)
     {
         $processor = ThreadProcessor::getInstance();
-        // TODO: Remove bufferization after *Processor classes will be rewritten
-        // to play nice with symfony request/response objects
-        ob_start();
-        $processor->handleRequest($request);
-        $content = ob_get_clean();
 
-        return $content;
+        return $processor->handleRequest($request);
     }
 }
diff --git a/src/mibew/libs/classes/Mibew/Controller/UsersController.php b/src/mibew/libs/classes/Mibew/Controller/UsersController.php
index 7fed5052..e975534f 100644
--- a/src/mibew/libs/classes/Mibew/Controller/UsersController.php
+++ b/src/mibew/libs/classes/Mibew/Controller/UsersController.php
@@ -91,12 +91,6 @@ class UsersController extends AbstractController
         $processor = UsersProcessor::getInstance();
         $processor->setAuthenticationManager($this->getAuthenticationManager());
 
-        // TODO: Remove bufferization after *Processor classes will be rewritten
-        // to play nice with symfony request/response objects
-        ob_start();
-        $processor->handleRequest($request);
-        $content = ob_get_clean();
-
-        return $content;
+        return $processor->handleRequest($request);
     }
 }
diff --git a/src/mibew/libs/classes/Mibew/RequestProcessor/AbstractProcessor.php b/src/mibew/libs/classes/Mibew/RequestProcessor/AbstractProcessor.php
index 75cb2ba5..4171c4a8 100644
--- a/src/mibew/libs/classes/Mibew/RequestProcessor/AbstractProcessor.php
+++ b/src/mibew/libs/classes/Mibew/RequestProcessor/AbstractProcessor.php
@@ -24,6 +24,7 @@ use Mibew\Database;
 use Mibew\EventDispatcher;
 use Mibew\RequestProcessor\Exception\AbstractProcessorException;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
 
 /**
  * Implements abstract class for request processing
@@ -155,8 +156,8 @@ abstract class AbstractProcessor
      * listener to the "<eventPrefix>RequestError" event.
      *
      * @param Request $request The request to handle.
-     * @return boolean true if request processed succussfully or false on
-     *   failure
+     * @return Response|boolean A response object if request processed
+     *   succussfully or boolean false on failure
      */
     public function handleRequest($request)
     {
@@ -229,9 +230,9 @@ abstract class AbstractProcessor
             if (count($this->responses) != 0) {
                 // Send responses
                 if ($request_package['async']) {
-                    $this->sendAsyncResponses($this->responses);
+                    return $this->buildAsyncResponses($this->responses);
                 } else {
-                    $this->sendSyncResponses($this->responses);
+                    return $this->buildSyncResponses($this->responses);
                 }
             }
 
@@ -244,7 +245,8 @@ abstract class AbstractProcessor
             return false;
         }
 
-        return true;
+        // Return an empty response
+        return new Response();
     }
 
     /**
@@ -542,7 +544,7 @@ abstract class AbstractProcessor
      */
     protected function sendSyncRequest($request)
     {
-        trigger_error('Method sendSyncRequest does not implement!', E_USER_WARNING);
+        trigger_error('Method sendSyncRequest is not implemented!', E_USER_WARNING);
     }
 
     /**
@@ -553,29 +555,31 @@ abstract class AbstractProcessor
      */
     protected function sendAsyncRequest($request)
     {
-        trigger_error('Method sendAsyncRequest does not implement!', E_USER_WARNING);
+        trigger_error('Method sendAsyncRequest is not implemented!', E_USER_WARNING);
     }
 
     /**
-     * Sends synchronous responses
+     * Builds synchronous responses
      *
      * @param array $responses An array of the 'Request' arrays. See Mibew API
      *   for details
+     * @return Response A response object that is ready for sending to client.
      */
-    protected function sendSyncResponses($responses)
+    protected function buildSyncResponses($responses)
     {
-        trigger_error('Method sendSyncResponses does not implement!', E_USER_WARNING);
+        trigger_error('Method buildSyncResponses is not implemented!', E_USER_WARNING);
     }
 
     /**
-     * Sends asynchronous responses
+     * Builds asynchronous responses
      *
      * @param array $responses An array of the 'Request' arrays. See Mibew API
      *   for details
+     * @return Response A response object that is ready for sending to client.
      */
-    protected function sendAsyncResponses($responses)
+    protected function buildAsyncResponses($responses)
     {
-        trigger_error('Method sendAsyncResponses does not implement!', E_USER_WARNING);
+        trigger_error('Method buildAsyncResponses is not implemented!', E_USER_WARNING);
     }
 
     /**
diff --git a/src/mibew/libs/classes/Mibew/RequestProcessor/ClientSideProcessor.php b/src/mibew/libs/classes/Mibew/RequestProcessor/ClientSideProcessor.php
index 618010d0..54894db6 100644
--- a/src/mibew/libs/classes/Mibew/RequestProcessor/ClientSideProcessor.php
+++ b/src/mibew/libs/classes/Mibew/RequestProcessor/ClientSideProcessor.php
@@ -21,6 +21,7 @@ namespace Mibew\RequestProcessor;
 
 use Mibew\Database;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
 
 /**
  * Base class for all request processors that interact with JavaScript
@@ -57,19 +58,24 @@ abstract class ClientSideProcessor extends AbstractProcessor
     }
 
     /**
-     * Sends asynchronous responses
+     * Builds asynchronous responses
      *
      * @param array $responses An array of the 'Request' arrays. See Mibew API
-     * for details
+     *   for details
+     * @return Response A response object that is ready for sending to client.
      */
-    protected function sendAsyncResponses($responses)
+    protected function buildAsyncResponses($responses)
     {
-        header("Content-type: text/plain; charset=UTF-8");
-        echo($this->mibewAPI->encodePackage(
+        $resp = new Response($this->mibewAPI->encodePackage(
             $responses,
             $this->config['signature'],
             true
         ));
+
+        $resp->headers->set('Content-type', 'text/plain');
+        $resp->setCharset('UTF-8');
+
+        return $resp;
     }
 
     /**