diff --git a/mailbox_import_from_csv/install.sh b/mailbox_import_from_csv/install.sh
index d1c0c9782375b1411a4c0c2b8ca50d73def2b739..3bd02064b61e9343593ba34443a6621fd3357fa9 100644
--- a/mailbox_import_from_csv/install.sh
+++ b/mailbox_import_from_csv/install.sh
@@ -6,4 +6,8 @@ mv -f mailbox_import.menu.php /usr/local/ispconfig/interface/web/tools/lib/menu.
 
 chown ispconfig:ispconfig /usr/local/ispconfig/interface/web/tools/mailbox_import.php
 chown ispconfig:ispconfig /usr/local/ispconfig/interface/web/tools/templates/mailbox_import.htm
-chown ispconfig:ispconfig /usr/local/ispconfig/interface/web/tools/lib/menu.d/mailbox_import.menu.php
\ No newline at end of file
+chown ispconfig:ispconfig /usr/local/ispconfig/interface/web/tools/lib/menu.d/mailbox_import.menu.php
+
+chmod 750 /usr/local/ispconfig/interface/web/tools/mailbox_import.php
+chmod 750 /usr/local/ispconfig/interface/web/tools/templates/mailbox_import.htm
+chmod 750 /usr/local/ispconfig/interface/web/tools/lib/menu.d/mailbox_import.menu.php
\ No newline at end of file