diff --git a/Duplicati/Library/Backend/S3/S3Backend.cs b/Duplicati/Library/Backend/S3/S3Backend.cs
index fee5d5512..2413c5ca0 100644
--- a/Duplicati/Library/Backend/S3/S3Backend.cs
+++ b/Duplicati/Library/Backend/S3/S3Backend.cs
@@ -66,7 +66,7 @@ namespace Duplicati.Library.Backend
             { "Infomaniak Swiss Backup cluster 2", "s3.swiss-backup02.infomaniak.com" },
             { "Infomaniak Swiss Backup cluster 3", "s3.swiss-backup03.infomaniak.com" },
             { "Infomaniak Public Cloud 1", "s3.pub1.infomaniak.cloud" },
-            { "さくらのクラウド (Sakura Cloud)", "isk01.sakurastorage.jp" }
+            { "さくらのクラウド (Sakura Cloud)", "s3.isk01.sakurastorage.jp" }
         };
 
         //Updated list: http://docs.amazonwebservices.com/general/latest/gr/rande.html#s3_region