diff --git a/wp-includes/plugin.php b/wp-includes/plugin.php
index b7f06464e6..ad623df557 100644
--- a/wp-includes/plugin.php
+++ b/wp-includes/plugin.php
@@ -555,7 +555,7 @@ function plugin_basename($file) {
 	$mu_plugin_dir = preg_replace('|/+|','/', $mu_plugin_dir); // remove any duplicate slash
 	$file = preg_replace('#^' . preg_quote($plugin_dir, '#') . '/|^' . preg_quote($mu_plugin_dir, '#') . '/#','',$file); // get relative path from plugins dir
 	$file = trim($file, '/');
-	return apply_filters('plugin_basename', $file);
+	return $file;
 }
 
 /**