diff --git a/WebDavMailRuCloudStore/WebDavMailRuCloudStoreDocument.cs b/WebDavMailRuCloudStore/WebDavMailRuCloudStoreDocument.cs
index 3796d6c4..fd21a20f 100644
--- a/WebDavMailRuCloudStore/WebDavMailRuCloudStoreDocument.cs
+++ b/WebDavMailRuCloudStore/WebDavMailRuCloudStoreDocument.cs
@@ -85,7 +85,7 @@ public Stream OpenReadStream()
             {
                 throw new WebDavUnauthorizedException();
             }
-
+            stream.Seek(0, SeekOrigin.Begin);
             return stream;
         }