diff --git a/src/ConnectionInterface.php b/src/ConnectionInterface.php
index 65d9a1c..a46634a 100644
--- a/src/ConnectionInterface.php
+++ b/src/ConnectionInterface.php
@@ -25,7 +25,7 @@ public static function getDb($dbname = null);
     /**
      * Creates API command.
      * @param array $config
-     * @return mixed response
+     * @return Command response
      */
     public function createCommand(array $config = []);
 }