diff --git a/lib/SimpleSAML/SessionHandlerCookie.php b/lib/SimpleSAML/SessionHandlerCookie.php
index 9450aab3742f3abdc48798b9c1fc7de0329ea4d0..06cd8a188ba81f744534d47ea58663a8c08fc6c9 100644
--- a/lib/SimpleSAML/SessionHandlerCookie.php
+++ b/lib/SimpleSAML/SessionHandlerCookie.php
@@ -45,7 +45,7 @@ extends SimpleSAML_SessionHandler {
 		/* We don't have a valid session. Create a new session id. */
 		$this->session_id = self::createSessionID();
 		setcookie('SimpleSAMLSessionID', $this->session_id, 0, '/',
-			NULL, self::secureCookie(), TRUE);
+			NULL, self::secureCookie());
 	}