diff --git a/extensions/swiftmailer/yii/swiftmailer/Message.php b/extensions/swiftmailer/yii/swiftmailer/Message.php
index 42d25e7..89a871d 100644
--- a/extensions/swiftmailer/yii/swiftmailer/Message.php
+++ b/extensions/swiftmailer/yii/swiftmailer/Message.php
@@ -42,6 +42,22 @@ class Message extends BaseMessage
 	/**
 	 * @inheritdoc
 	 */
+	public function setCharset($charset)
+	{
+		$this->getSwiftMessage()->setCharset($charset);
+	}
+
+	/**
+	 * @return string the character set of this message.
+	 */
+	public function getCharset()
+	{
+		return $this->getSwiftMessage()->getCharset();
+	}
+
+	/**
+	 * @inheritdoc
+	 */
 	public function setFrom($from)
 	{
 		$this->getSwiftMessage()->setFrom($from);
@@ -232,8 +248,8 @@ class Message extends BaseMessage
 	{
 		$embedFile = \Swift_EmbeddedFile::newInstance($content);
 		if (!empty($options['fileName'])) {
-				$embedFile->setFilename($options['fileName']);
-			}
+			$embedFile->setFilename($options['fileName']);
+		}
 		if (!empty($options['contentType'])) {
 			$embedFile->setContentType($options['contentType']);
 		}
diff --git a/framework/yii/mail/BaseMessage.php b/framework/yii/mail/BaseMessage.php
index 8c4daa8..a641521 100644
--- a/framework/yii/mail/BaseMessage.php
+++ b/framework/yii/mail/BaseMessage.php
@@ -21,6 +21,7 @@ use Yii;
  * @see BaseMailer
  *
  * @property \yii\mail\BaseMailer $mailer mailer component instance. This property is read-only.
+ * @property string $charset the character set of this message.
  * @property string|array $from sender email address.
  * @property string|array $to receiver email address.
  * @property string|array $cc copy receiver email address.
diff --git a/framework/yii/mail/MessageInterface.php b/framework/yii/mail/MessageInterface.php
index e7de37b..171c4f3 100644
--- a/framework/yii/mail/MessageInterface.php
+++ b/framework/yii/mail/MessageInterface.php
@@ -16,6 +16,12 @@ namespace yii\mail;
 interface MessageInterface
 {
 	/**
+	 * Set the character set of this message.
+	 * @param string $charset character set name.
+	 */
+	public function setCharset($charset);
+
+	/**
 	 * Sets message sender.
 	 * @param string|array $from sender email address.
 	 * You may pass an array of addresses if this message is from multiple people.
diff --git a/tests/unit/framework/mail/BaseMailerTest.php b/tests/unit/framework/mail/BaseMailerTest.php
index ab70563..1781657 100644
--- a/tests/unit/framework/mail/BaseMailerTest.php
+++ b/tests/unit/framework/mail/BaseMailerTest.php
@@ -168,6 +168,8 @@ class Message extends BaseMessage
 	public $id;
 	public $encoding;
 
+	public function setCharset($charset) {}
+
 	public function setFrom($from) {}
 
 	public function setTo($to) {}