diff --git a/src/messenger/webim/libs/common/response.php b/src/messenger/webim/libs/common/response.php
index e77917e2..a9c03a90 100644
--- a/src/messenger/webim/libs/common/response.php
+++ b/src/messenger/webim/libs/common/response.php
@@ -239,4 +239,30 @@ function add_params($servlet, $params)
 	return $servlet;
 }
 
+/**
+ * Builds JSONP response to the Mibew widget
+ *
+ * @param array $response Response data. It can contain following items:
+ * - 'load': associative array, specify files which must be loaded. Array keys
+ *   are file aliases and values are URLs. One can use file alias to specify
+ *   dependences (described below).
+ * - 'handlers': array, handlers which must be called (described below).
+ * - 'dependences': array, specify dependences between handlers and loaded
+ *   files. Array keys are handlers names and values are arrays of file aliases
+ *   from load item. Handler function will call only after all specified files
+ *   loaded.
+ * - 'data': associative array, arbitrary structure which will be passed to all
+ *   functions, specified in 'handlers' item.
+ * @return string JSONP response that ready to send to the widget
+ */
+function build_widget_response($response) {
+	$result = $response + array(
+		'load' => array(),
+		'handlers' => array(),
+		'dependences' => array(),
+		'data' => array()
+	);
+	return "mibewOnResponse(" . json_encode($result) . ");";
+}
+
 ?>
\ No newline at end of file
diff --git a/src/messenger/webim/libs/request.php b/src/messenger/webim/libs/request.php
deleted file mode 100644
index af8d582b..00000000
--- a/src/messenger/webim/libs/request.php
+++ /dev/null
@@ -1,27 +0,0 @@
-<?php
-/*
- * Copyright 2005-2013 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-function build_js_response($response)
-{
-	$result = array('load' => (isset($response['load'])?$response['load']:array()),
-			'handlers' => (isset($response['handlers'])?$response['handlers']:array()),
-			'dependences' => (isset($response['dependences'])?$response['dependences']:array()),
-			'data' => (isset($response['data'])?$response['data']:array()));
-	return "mibewOnResponse(" . json_encode($result) . ");";
-}
-
-?>
\ No newline at end of file
diff --git a/src/messenger/webim/request.php b/src/messenger/webim/request.php
index 2338ba58..be3c4907 100644
--- a/src/messenger/webim/request.php
+++ b/src/messenger/webim/request.php
@@ -19,7 +19,6 @@ require_once('libs/init.php');
 require_once('libs/invitation.php');
 require_once('libs/operator.php');
 require_once('libs/track.php');
-require_once('libs/request.php');
 
 $invited = FALSE;
 $operator = array();
@@ -81,7 +80,7 @@ if ($invited !== FALSE) {
 }
 
 start_js_output();
-echo build_js_response($response);
+echo build_widget_response($response);
 
 exit;
 ?>
\ No newline at end of file