diff --git a/deltachat-ffi/src/lib.rs b/deltachat-ffi/src/lib.rs
index b36b78976..176505e69 100644
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -1,3 +1,4 @@
+#![deny(clippy::all)]
 #![allow(
     non_camel_case_types,
     non_snake_case,