diff --git a/ssl/ffi.rs b/ssl/ffi.rs
index 018f08e4..0be09371 100644
--- a/ssl/ffi.rs
+++ b/ssl/ffi.rs
@@ -1,4 +1,5 @@
 #[doc(hidden)];
+#[allow(non_camel_case_types)];
 
 use std::libc::{c_int, c_void, c_long, c_ulong, c_char};