diff --git a/src/Appwrite/Auth/OAuth2/Etsy.php b/src/Appwrite/Auth/OAuth2/Etsy.php
index 5fce8733f9..630c6a8565 100644
--- a/src/Appwrite/Auth/OAuth2/Etsy.php
+++ b/src/Appwrite/Auth/OAuth2/Etsy.php
@@ -39,7 +39,7 @@ class Etsy extends OAuth2
      */
     private string $pkce = '';
 
-    private function getPKCE()
+    private function getPKCE(): string
     {
         if (empty($this->pkce)) {
             $this->pkce = \bin2hex(\random_bytes(rand(43, 128)));