diff --git a/ports/geckolib/string_cache/lib.rs b/ports/geckolib/string_cache/lib.rs
index 3515331c174..69f31d986e9 100644
--- a/ports/geckolib/string_cache/lib.rs
+++ b/ports/geckolib/string_cache/lib.rs
@@ -28,6 +28,7 @@ use std::ops::Deref;
 use std::slice;
 
 #[macro_use]
+#[allow(improper_ctypes)]
 pub mod atom_macro;
 pub mod namespace;