diff --git a/extensions/mutex/yii/mutex/FileMutex.php b/extensions/mutex/yii/mutex/FileMutex.php
index 4a949d0..ab418ba 100644
--- a/extensions/mutex/yii/mutex/FileMutex.php
+++ b/extensions/mutex/yii/mutex/FileMutex.php
@@ -18,7 +18,7 @@ class FileMutex extends Mutex
 {
 	/**
 	 * @var string the directory to store mutex files. You may use path alias here.
-	 * If not set, it will use the "mutex" subdirectory under the application runtime path.
+	 * Defaults to the "mutex" subdirectory under the application runtime path.
 	 */
 	public $mutexPath = '@runtime/mutex';
 	/**
@@ -69,7 +69,7 @@ class FileMutex extends Mutex
 	}
 
 	/**
-	 * This method should be extended by concrete mutex implementations. Releases lock by given name.
+	 * Releases lock by given name.
 	 * @param string $name of the lock to be released.
 	 * @return boolean release result.
 	 */
diff --git a/extensions/mutex/yii/mutex/Mutex.php b/extensions/mutex/yii/mutex/Mutex.php
index 297abaf..8f0a560 100644
--- a/extensions/mutex/yii/mutex/Mutex.php
+++ b/extensions/mutex/yii/mutex/Mutex.php
@@ -45,6 +45,7 @@ abstract class Mutex extends Component
 	}
 
 	/**
+	 * Acquires lock by given name.
 	 * @param string $name of the lock to be acquired. Must be unique.
 	 * @param integer $timeout to wait for lock to be released. Defaults to zero meaning that method will return
 	 * false immediately in case lock was already acquired.
diff --git a/extensions/mutex/yii/mutex/MysqlMutex.php b/extensions/mutex/yii/mutex/MysqlMutex.php
index b04427a..f1c7cd1 100644
--- a/extensions/mutex/yii/mutex/MysqlMutex.php
+++ b/extensions/mutex/yii/mutex/MysqlMutex.php
@@ -29,7 +29,7 @@ class MysqlMutex extends Mutex
 	}
 
 	/**
-	 * This method should be extended by concrete mutex implementations. Acquires lock by given name.
+	 * Acquires lock by given name.
 	 * @param string $name of the lock to be acquired.
 	 * @param integer $timeout to wait for lock to become released.
 	 * @return boolean acquiring result.
@@ -43,7 +43,7 @@ class MysqlMutex extends Mutex
 	}
 
 	/**
-	 * This method should be extended by concrete mutex implementations. Releases lock by given name.
+	 * Releases lock by given name.
 	 * @param string $name of the lock to be released.
 	 * @return boolean release result.
 	 * @see http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_release-lock