diff --git a/ElFinderHelper.php b/ElFinderHelper.php
index 8b0c046..0823a23 100644
--- a/ElFinderHelper.php
+++ b/ElFinderHelper.php
@@ -133,4 +133,19 @@ public static function getAssetsDir() {
 		return self::$_assetsDir;
 	}
 
+	/**
+	 * Try import TinyMceFileManager class.
+	 */
+	public static function importTinyMceFileManager() {
+		if (@class_exists('TinyMceFileManager')) {
+			// class already imported or declared
+		} elseif (Yii::getPathOfAlias('tinymce')) {
+			// try import by declared alias
+			Yii::import('tinymce.TinyMceFileManager');
+		} else {
+			// try import by default extension directory
+			Yii::import('ext.tinymce.TinyMceFileManager');
+		}
+	}
+
 }
diff --git a/TinyMceElFinder.php b/TinyMceElFinder.php
index 7de3b74..231e719 100644
--- a/TinyMceElFinder.php
+++ b/TinyMceElFinder.php
@@ -1,6 +1,7 @@
 <?php
 
-Yii::import('ext.tinymce.TinyMceFileManager');
+require_once dirname(__FILE__) . '/ElFinderHelper.php';
+ElFinderHelper::importTinyMceFileManager();
 
 /**
  * elFnder file manager for TinyMCE