diff --git a/api.php b/api.php
index 9f4798b..9b8fdc7 100644
--- a/api.php
+++ b/api.php
@@ -241,7 +241,12 @@ class ZammadClient {
     private string $token;
 
     public function __construct(string $url, string $token) {
-        $this->url = rtrim($url, '/');
+        $url = rtrim($url, '/');
+        // Lisää https:// jos protokolla puuttuu
+        if (!preg_match('#^https?://#i', $url)) {
+            $url = 'https://' . $url;
+        }
+        $this->url = $url;
         $this->token = $token;
     }