1 files changed, 4 insertions, 3 deletions
diff --git a/src/codegen/mod.rs b/src/codegen/mod.rs
index 9a7bf897..edaf7afe 100644
--- a/src/codegen/mod.rs
+++ b/src/codegen/mod.rs
@@ -43,12 +43,13 @@ use proc_macro2::{self, Ident, Span};
 use std;
 use std::borrow::Cow;
 use std::cell::Cell;
-use std::collections::{HashSet, VecDeque};
-use std::collections::hash_map::{Entry, HashMap};
+use std::collections::VecDeque;
+use std::collections::hash_map::Entry;
 use std::fmt::Write;
 use std::iter;
 use std::ops;
 use std::str::FromStr;
+use {HashMap, HashSet};
 
 // Name of type defined in constified enum module
 pub static CONSTIFIED_ENUM_MODULE_REPR_NAME: &'static str = "Type";
@@ -2638,7 +2639,7 @@ impl CodeGenerator for Enum {
         );
 
         // A map where we keep a value -> variant relation.
-        let mut seen_values = HashMap::<_, Ident>::new();
+        let mut seen_values = HashMap::<_, Ident>::default();
         let enum_rust_ty = item.to_rust_ty_or_opaque(ctx, &());
         let is_toplevel = item.is_toplevel(ctx);