diff --git a/config/config.exs b/config/config.exs
index be6a0d81c..70070d9bc 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -251,7 +251,7 @@
   registration_reason_length: 500,
   external_user_synchronization: true,
   extended_nickname_format: true,
-  cleanup_attachments: false,
+  cleanup_attachments: true,
   cleanup_attachments_delay: 1800,
   multi_factor_authentication: [
     totp: [