diff --git a/components/I18N.php b/components/I18N.php
index d52d616..0ae882a 100644
--- a/components/I18N.php
+++ b/components/I18N.php
@@ -116,4 +116,22 @@ class I18N extends \Zelenin\yii\modules\I18n\components\I18N
      */
     public $catalog = 'messages';
 
+    /**
+     * @throws InvalidConfigException
+     */
+    public function init()
+    {
+        if (!$this->languages) {
+            throw new InvalidConfigException('You should configure i18n component [language]');
+        }
+
+        if (is_callable($this->languages)) {
+            $this->languages = call_user_func($this->languages);
+        }
+        if (!is_array($this->languages)) {
+            throw new InvalidConfigException('i18n component [language] must be an array or a callable returning an array');
+        }
+
+        parent::init();
+    }
 }
diff --git a/composer.json b/composer.json
index d0723bb..61d40ee 100644
--- a/composer.json
+++ b/composer.json
@@ -1,45 +1,44 @@
 {
-    "name": "uran1980/yii2-translate-panel",
-    "description": "Yii2 Translate Panel makes the translation of your application awesome!",
-    "version": "0.1.28",
-    "type": "yii2-extension",
-    "keywords": [
-        "yii2",
-        "i18n",
-        "translation",
-        "translations",
-        "translate-panel"
-    ],
-    "homepage": "https://github.com/uran1980/yii2-translate-panel",
-    "time": "2015-03-11 17:30",
-    "license": "MIT",
-    "authors": [
-        {
-            "name": "Ivan Yakovlev",
-            "email": "uran1980@gmail.com",
-            "homepage": "https://github.com/uran1980",
-            "role": "Developer"
-        }
-    ],
-    "support": {
-        "issues": "https://github.com/uran1980/yii2-translate-panel/issues",
-        "source": "https://github.com/uran1980/yii2-translate-panel"
-    },
-    "require": {
-        "yiisoft/yii2": "~2",
-        "zelenin/yii2-i18n-module": "0.1.*",
-        "rmrevin/yii2-fontawesome": "*",
-        "uran1980/yii2-igrowl-widget": "*",
-        "uran1980/yii2-chosen-select": "*",
-        "uran1980/yii2-bootstrap-confirmation": "*",
-        "uran1980/yii2-jquery-essential": "*"
-    },
-    "autoload": {
-        "psr-4": {
-            "uran1980\\yii\\modules\\i18n\\": ""
-        }
-    },
-    "extra": {
-        "bootstrap": "uran1980\\yii\\modules\\i18n\\Bootstrap"
-    }
-}
+	"name" : "uran1980/yii2-translate-panel",
+	"description" : "Yii2 Translate Panel makes the translation of your application awesome!",
+	"version" : "0.1.29",
+	"type" : "yii2-extension",
+	"keywords" : [
+		"yii2",
+		"i18n",
+		"translation",
+		"translations",
+		"translate-panel"
+	],
+	"homepage" : "https://github.com/uran1980/yii2-translate-panel",
+	"time" : "2015-03-11 17:30",
+	"license" : "MIT",
+	"authors" : [{
+			"name" : "Ivan Yakovlev",
+			"email" : "uran1980@gmail.com",
+			"homepage" : "https://github.com/uran1980",
+			"role" : "Developer"
+		}
+	],
+	"support" : {
+		"issues" : "https://github.com/uran1980/yii2-translate-panel/issues",
+		"source" : "https://github.com/uran1980/yii2-translate-panel"
+	},
+	"require" : {
+		"yiisoft/yii2" : "~2",
+		"zelenin/yii2-i18n-module" : "0.1.*",
+		"rmrevin/yii2-fontawesome" : "*",
+		"uran1980/yii2-igrowl-widget" : "*",
+		"uran1980/yii2-chosen-select" : "*",
+		"uran1980/yii2-bootstrap-confirmation" : "*",
+		"uran1980/yii2-jquery-essential" : "*"
+	},
+	"autoload" : {
+		"psr-4" : {
+			"uran1980\\yii\\modules\\i18n\\" : ""
+		}
+	},
+	"extra" : {
+		"bootstrap" : "uran1980\\yii\\modules\\i18n\\Bootstrap"
+	}
+}
\ No newline at end of file
diff --git a/controllers/DefaultController.php b/controllers/DefaultController.php
index 2137663..cb79739 100644
--- a/controllers/DefaultController.php
+++ b/controllers/DefaultController.php
@@ -5,6 +5,7 @@
 use Yii;
 use yii\base\Model;
 use uran1980\yii\modules\i18n\Module;
+use uran1980\yii\modules\i18n\models\SourceMessage;
 use uran1980\yii\modules\i18n\models\search\SourceMessageSearch;
 use uran1980\yii\modules\i18n\helpers\AppHelper;
 use yii\helpers\Html;
@@ -184,4 +185,22 @@ public function actionRestore($id)
 
         return $response;
     }
+
+    /**
+     * @param array|integer $id
+     * @return SourceMessage|SourceMessage[]
+     * @throws NotFoundHttpException
+     */
+    protected function findModel($id)
+    {
+        $query = SourceMessage::find()->where('id = :id', [':id' => $id]);
+        $models = is_array($id)
+        ? $query->all()
+        : $query->one();
+        if (!empty($models)) {
+            return $models;
+        } else {
+            throw new NotFoundHttpException(Module::t('The requested page does not exist'));
+        }
+    }
 }
diff --git a/models/SourceMessage.php b/models/SourceMessage.php
index 7cc2f73..1ab5de2 100644
--- a/models/SourceMessage.php
+++ b/models/SourceMessage.php
@@ -57,7 +57,7 @@ public function attributeLabels()
         return [
             'id'            => Module::t('ID'),
             'category'      => Module::t('Category'),
-            'message'       => Module::t('Sourse Messages'),
+            'message'       => Module::t('Source Messages'),
             'translation'   => Module::t('Message Translations'),
             'status'        => Module::t('Translation status')
         ];
@@ -92,7 +92,7 @@ public static function getCategories()
     public function initMessages()
     {
         $messages = [];
-        foreach (Yii::$app->getI18n()->languages as $language) {
+        foreach (Yii::$app->i18n->languages as $language) {
             if (!isset($this->messages[$language])) {
                 $message             = new Message;
                 $message->language   = $language;
diff --git a/views/default/_message-tabs.php b/views/default/_message-tabs.php
index 4098ea4..91ab0c2 100644
--- a/views/default/_message-tabs.php
+++ b/views/default/_message-tabs.php
@@ -4,11 +4,8 @@
 use yii\bootstrap\Tabs;
 
 $items = [];
-if (is_callable(Yii::$app->i18n->languages)) {
-    $languages = call_user_func(Yii::$app->i18n->languages);
-} else {
-    $languages = Yii::$app->i18n->languages;
-}
+
+$languages = Yii::$app->i18n->languages;
 foreach ( $languages as $lang ) {
     $message = Yii::t($model->category, $model->message, [], $lang);
     $message = ($model->message == $message && $lang != $languages[0])
diff --git a/views/default/update.php b/views/default/update.php
index 3a8dcb6..60f2995 100644
--- a/views/default/update.php
+++ b/views/default/update.php
@@ -25,7 +25,7 @@
         <?php $form = ActiveForm::begin(); ?>
         <div class="row">
             <?php foreach ($model->messages as $language => $message) : ?>
-                <?php echo $form->field($model->messages[$language], '[' . $language . ']translation', ['options' => ['class' => 'form-group col-sm-6']])->textInput()->label($language); ?>
+                <?php echo $form->field($model->messages[$language], '[' . $language . ']translation', ['options' => ['class' => 'form-group col-sm-6']])->textInput()->label(strtoupper($language)); ?>
             <?php endforeach; ?>
         </div>
         <div class="form-group">