diff --git a/deltachat-ffi/src/lib.rs b/deltachat-ffi/src/lib.rs
index cd9b2521a..f16ca2916 100644
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -1,4 +1,4 @@
-#![warn(unused, clippy::all)]
+#![warn(unused, clippy::all, clippy::missing_docs_in_private_items)]
 #![allow(
     non_camel_case_types,
     non_snake_case,