diff --git a/src/lib.rs b/src/lib.rs
index 8ee1fdf..d2d7de2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,6 @@
+// Deny warnings inside doc tests / examples
+#![doc(test(attr(deny(warnings))))]
+
 extern crate libc;
 
 pub mod ffi;