diff --git a/GameEngine/Mailer.php b/GameEngine/Mailer.php
index 88b7788..d390f3c 100644
--- a/GameEngine/Mailer.php
+++ b/GameEngine/Mailer.php
@@ -27,7 +27,7 @@ function sendActivate($email,$username,$pass,$act) {
 ----------------------------
 
 Click the following link in order to activate your account:
-".SERVER."activate.php?code=".$act."
+http://${_SERVER['HTTP_HOST']}/activate.php?code=$act
 
 Greetings,
 TravianX";