diff --git a/lib/FroalaEditor/S3.php b/lib/FroalaEditor/S3.php
index d79602e..28d114b 100644
--- a/lib/FroalaEditor/S3.php
+++ b/lib/FroalaEditor/S3.php
@@ -92,7 +92,7 @@ public static function getHash($config) {
     // Prepare response.
     $response = new \StdClass;
     $response->bucket = $bucket;
-    $response->region = $region != 'us-east-1' ? 's3-' . $region : 's3';
+    $response->region = $region != 'us-east-1' ? 's3.' . $region : 's3';
     $response->keyStart = $keyStart;
 
     // Prepare params.