diff --git a/components/style/gecko/arc_types.rs b/components/style/gecko/arc_types.rs
index 4a9512b4447..24bf22d69a7 100644
--- a/components/style/gecko/arc_types.rs
+++ b/components/style/gecko/arc_types.rs
@@ -23,12 +23,12 @@ use servo_arc::Arc;
 macro_rules! impl_simple_arc_ffi {
     ($ty:ty, $addref:ident, $release:ident) => {
         #[no_mangle]
-        pub unsafe extern "C" fn $addref(obj: &$ty) {
+        pub unsafe extern "C" fn $addref(obj: *const $ty) {
             std::mem::forget(Arc::from_raw_addrefed(obj));
         }
 
         #[no_mangle]
-        pub unsafe extern "C" fn $release(obj: &$ty) {
+        pub unsafe extern "C" fn $release(obj: *const $ty) {
             let _ = Arc::from_raw(obj);
         }
     };