diff --git a/src/pocketmine/plugin/Plugin.php b/src/pocketmine/plugin/Plugin.php
index d01083536..ece3905d1 100644
--- a/src/pocketmine/plugin/Plugin.php
+++ b/src/pocketmine/plugin/Plugin.php
@@ -54,7 +54,8 @@ interface Plugin extends CommandExecutor{
 	public function isDisabled();
 
 	/**
-	 * Gets the plugin's data folder to save files and configuration
+	 * Gets the plugin's data folder to save files and configuration.
+	 * This directory name has a trailing slash.
 	 */
 	public function getDataFolder();
 
@@ -111,4 +112,4 @@ interface Plugin extends CommandExecutor{
 	 */
 	public function getPluginLoader();
 
-}
\ No newline at end of file
+}