1 files changed, 2 insertions, 2 deletions
diff --git a/src/librustc/middle/lib_features.rs b/src/librustc/middle/lib_features.rs
index 6055a05158f..7d65d412e01 100644
--- a/src/librustc/middle/lib_features.rs
+++ b/src/librustc/middle/lib_features.rs
@@ -31,8 +31,8 @@ pub struct LibFeatures {
 impl LibFeatures {
     fn new() -> LibFeatures {
         LibFeatures {
-            stable: FxHashMap(),
-            unstable: FxHashSet(),
+            stable: Default::default(),
+            unstable: Default::default(),
         }
     }