diff --git a/e107_plugins/pm/e_shortcode.php b/e107_plugins/pm/e_shortcode.php
index ef293fd6e..890f5e57b 100644
--- a/e107_plugins/pm/e_shortcode.php
+++ b/e107_plugins/pm/e_shortcode.php
@@ -26,7 +26,7 @@ class pm_shortcodes extends e_shortcode
 		include_lan(e_PLUGIN.'pm/languages/'.e_LANGUAGE.'.php');
 		require_once(e_PLUGIN."pm/pm_func.php");
 
-		$this->pm = new pmbox_manager;
+		$this->pm = new pmbox_manager();
 
 		$this->prefs = $this->pm->prefs();
 
diff --git a/e107_plugins/pm/pm_func.php b/e107_plugins/pm/pm_func.php
index 073155d4f..9ae73b594 100755
--- a/e107_plugins/pm/pm_func.php
+++ b/e107_plugins/pm/pm_func.php
@@ -17,7 +17,7 @@ class pmbox_manager
 	protected	$pmPrefs = array();
 	protected 	$pmDB;
 
-	public function __construct($prefs)
+	public function __construct($prefs='')
 	{
 		$this->pmDB = e107::getDb();
 		// $this->pmPrefs = $prefs;