diff --git a/src/test/run-make/hotplug_codegen_backend/the_backend.rs b/src/test/run-make/hotplug_codegen_backend/the_backend.rs
index fc06737e0e97..0de404ed249d 100644
--- a/src/test/run-make/hotplug_codegen_backend/the_backend.rs
+++ b/src/test/run-make/hotplug_codegen_backend/the_backend.rs
@@ -77,6 +77,6 @@ impl TransCrate for TheBackend {
 
 /// This is the entrypoint for a hot plugged rustc_trans
 #[no_mangle]
-pub extern "C" fn __rustc_codegen_backend(sess: &Session) -> Box<TransCrate> {
+pub fn __rustc_codegen_backend(sess: &Session) -> Box<TransCrate> {
     Box::new(TheBackend(MetadataOnlyTransCrate::new(sess)))
 }