diff --git a/syntax/mangle.rs b/syntax/mangle.rs
index 6f4e0d8..1380704 100644
--- a/syntax/mangle.rs
+++ b/syntax/mangle.rs
@@ -13,7 +13,7 @@
 
 pub fn extern_fn(namespace: &Namespace, efn: &ExternFn) -> Symbol {
     match &efn.receiver {
-        Some(receiver) => join!(namespace, CXXBRIDGE, receiver.ident, efn.ident),
+        Some(receiver) => join!(namespace, CXXBRIDGE, receiver.ty, efn.ident),
         None => join!(namespace, CXXBRIDGE, efn.ident),
     }
 }