diff --git a/application/loginwebpage.class.inc.php b/application/loginwebpage.class.inc.php
index 46883148a..0f4775092 100644
--- a/application/loginwebpage.class.inc.php
+++ b/application/loginwebpage.class.inc.php
@@ -51,6 +51,7 @@ class LoginWebPage extends NiceWebPage
 	{
 		parent::__construct($sTitle);
 		$this->SetStyleSheet();
+		$this->add_header("Cache-control: no-cache");
 	}
 	
 	public function SetStyleSheet()