diff --git a/src/libserialize/tests/json.rs b/src/libserialize/tests/json.rs
index 8342e4f9742..898168252e5 100644
--- a/src/libserialize/tests/json.rs
+++ b/src/libserialize/tests/json.rs
@@ -1,4 +1,4 @@
-#![allow(rustc::default_hash_types)]
+#![allow(rustc::internal)]
 
 extern crate serialize as rustc_serialize;
 
diff --git a/src/libserialize/tests/opaque.rs b/src/libserialize/tests/opaque.rs
index 26b113699c6..592bc090399 100644
--- a/src/libserialize/tests/opaque.rs
+++ b/src/libserialize/tests/opaque.rs
@@ -1,4 +1,4 @@
-#![allow(rustc::default_hash_types)]
+#![allow(rustc::internal)]
 
 extern crate serialize as rustc_serialize;