diff --git a/common/framework/drivers/cache/dummy.php b/common/framework/drivers/cache/dummy.php
index 5ff40a93f..7818afa58 100644
--- a/common/framework/drivers/cache/dummy.php
+++ b/common/framework/drivers/cache/dummy.php
@@ -179,5 +179,6 @@ class Dummy implements \Rhymix\Framework\Drivers\CacheInterface
 	public function clear()
 	{
 		$this->data = array();
+		return true;
 	}
 }
diff --git a/common/framework/drivers/cache/file.php b/common/framework/drivers/cache/file.php
index 31a1a3403..6159461e2 100644
--- a/common/framework/drivers/cache/file.php
+++ b/common/framework/drivers/cache/file.php
@@ -171,7 +171,7 @@ class File implements \Rhymix\Framework\Drivers\CacheInterface
 	 */
 	public function clear()
 	{
-		Storage::deleteDirectory($this->_dir);
+		return Storage::deleteDirectory($this->_dir) ? true : false;
 	}
 	
 	/**
diff --git a/common/framework/drivers/cache/sqlite.php b/common/framework/drivers/cache/sqlite.php
index 6ae190252..11d8615d3 100644
--- a/common/framework/drivers/cache/sqlite.php
+++ b/common/framework/drivers/cache/sqlite.php
@@ -242,5 +242,7 @@ class SQLite implements \Rhymix\Framework\Drivers\CacheInterface
 		{
 			$this->_dbh->exec('CREATE TABLE cache_' . $i . ' (k TEXT PRIMARY KEY, v TEXT, exp INT)');
 		}
+		
+		return true;
 	}
 }