diff --git a/backend/jottacloud/jottacloud.go b/backend/jottacloud/jottacloud.go
index d5151e57c..5e428aec6 100644
--- a/backend/jottacloud/jottacloud.go
+++ b/backend/jottacloud/jottacloud.go
@@ -717,7 +717,7 @@ func NewFs(ctx context.Context, name, root string, m configmap.Mapper) (fs.Fs, e
 		CaseInsensitive:         true,
 		CanHaveEmptyDirectories: true,
 		ReadMimeType:            true,
-		WriteMimeType:           true,
+		WriteMimeType:           false,
 	}).Fill(ctx, f)
 	f.srv.SetErrorHandler(errorHandler)
 	if opt.TrashedOnly { // we cannot support showing Trashed Files when using ListR right now
diff --git a/docs/content/overview.md b/docs/content/overview.md
index da42b6426..db10693af 100644
--- a/docs/content/overview.md
+++ b/docs/content/overview.md
@@ -30,7 +30,7 @@ Here is an overview of the major features of each cloud storage system.
 | Google Photos                | -           | No      | No               | Yes             | R         |
 | HTTP                         | -           | No      | No               | No              | R         |
 | Hubic                        | MD5         | Yes     | No               | No              | R/W       |
-| Jottacloud                   | MD5         | Yes     | Yes              | No              | R/W       |
+| Jottacloud                   | MD5         | Yes     | Yes              | No              | R         |
 | Koofr                        | MD5         | No      | Yes              | No              | -         |
 | Mail.ru Cloud                | Mailru ⁶    | Yes     | Yes              | No              | -         |
 | Mega                         | -           | No      | No               | Yes             | -         |