diff --git a/core/control/Director.php b/core/control/Director.php
index 0f17e8018..92df053b4 100644
--- a/core/control/Director.php
+++ b/core/control/Director.php
@@ -503,13 +503,14 @@ class Director {
 	 * Force a redirect to a domain starting with "www."
 	 */
 	static function forceWWW() {
-		if(!Director::isDev() && !Director::isTest() && strpos( $_SERVER['SERVER_NAME'], 'www') !== 0 ){
-			if( $_SERVER['HTTPS'] )
-				$destURL = str_replace('https://','https://www.',Director::absoluteURL($_SERVER['REQUEST_URI']));
-			else
-				$destURL = str_replace('http://','http://www.',Director::absoluteURL($_SERVER['REQUEST_URI']));
+		if(!Director::isDev() && !Director::isTest() && strpos($_SERVER['SERVER_NAME'], 'www') !== 0) {
+			if(!empty($_SERVER['HTTPS'])) {
+				$destURL = str_replace('https://', 'https://www.', Director::absoluteURL($_SERVER['REQUEST_URI']));
+			} else {
+				$destURL = str_replace('http://', 'http://www.', Director::absoluteURL($_SERVER['REQUEST_URI']));
+			}
 
-			header("Location: $destURL");
+			header("Location: $destURL", true, 301);
 			die("<h1>Your browser is not accepting header redirects</h1><p>Please <a href=\"$destURL\">click here</a>");
 		}
 	}