diff --git a/src/librustc/hir/lowering.rs b/src/librustc/hir/lowering.rs
index f551eb48c6cc..182dfdb60e36 100644
--- a/src/librustc/hir/lowering.rs
+++ b/src/librustc/hir/lowering.rs
@@ -1391,12 +1391,11 @@ impl<'a> LoweringContext<'a> {
         );
 
         self.with_hir_id_owner(exist_ty_node_id, |lctx| {
-            let LoweredNodeId { node_id, hir_id } = lctx.next_id();
+            let LoweredNodeId { node_id: _, hir_id } = lctx.next_id();
             let exist_ty_item_kind = hir::ItemKind::Existential(hir::ExistTy {
                 generics: hir::Generics {
                     params: lifetime_defs,
                     where_clause: hir::WhereClause {
-                        id: node_id,
                         hir_id,
                         predicates: Vec::new().into(),
                     },
@@ -2599,10 +2598,9 @@ impl<'a> LoweringContext<'a> {
         self.with_anonymous_lifetime_mode(
             AnonymousLifetimeMode::ReportError,
             |this| {
-                let LoweredNodeId { node_id, hir_id } = this.lower_node_id(wc.id);
+                let LoweredNodeId { node_id: _, hir_id } = this.lower_node_id(wc.id);
 
                 hir::WhereClause {
-                    id: node_id,
                     hir_id,
                     predicates: wc.predicates
                         .iter()
diff --git a/src/librustc/hir/mod.rs b/src/librustc/hir/mod.rs
index a5b61f002f77..37e45ebe7f4f 100644
--- a/src/librustc/hir/mod.rs
+++ b/src/librustc/hir/mod.rs
@@ -19,7 +19,7 @@ use errors::FatalError;
 use syntax_pos::{Span, DUMMY_SP, symbol::InternedString};
 use syntax::source_map::Spanned;
 use rustc_target::spec::abi::Abi;
-use syntax::ast::{self, CrateSugar, Ident, Name, NodeId, DUMMY_NODE_ID, AsmDialect};
+use syntax::ast::{self, CrateSugar, Ident, Name, NodeId, AsmDialect};
 use syntax::ast::{Attribute, Label, Lit, StrStyle, FloatTy, IntTy, UintTy};
 use syntax::attr::{InlineAttr, OptimizeAttr};
 use syntax::ext::hygiene::SyntaxContext;
@@ -583,7 +583,6 @@ impl Generics {
         Generics {
             params: HirVec::new(),
             where_clause: WhereClause {
-                id: DUMMY_NODE_ID,
                 hir_id: DUMMY_HIR_ID,
                 predicates: HirVec::new(),
             },
@@ -628,7 +627,6 @@ pub enum SyntheticTyParamKind {
 /// A where-clause in a definition.
 #[derive(Clone, RustcEncodable, RustcDecodable, Debug)]
 pub struct WhereClause {
-    pub id: NodeId,
     pub hir_id: HirId,
     pub predicates: HirVec<WherePredicate>,
 }
diff --git a/src/librustc/hir/print.rs b/src/librustc/hir/print.rs
index ece649cf1b88..17d374884134 100644
--- a/src/librustc/hir/print.rs
+++ b/src/librustc/hir/print.rs
@@ -2248,7 +2248,6 @@ impl<'a> State<'a> {
         let generics = hir::Generics {
             params: hir::HirVec::new(),
             where_clause: hir::WhereClause {
-                id: ast::DUMMY_NODE_ID,
                 hir_id: hir::DUMMY_HIR_ID,
                 predicates: hir::HirVec::new(),
             },
diff --git a/src/librustc/ich/impls_hir.rs b/src/librustc/ich/impls_hir.rs
index 0bee2a6f260a..97d5abd28fa1 100644
--- a/src/librustc/ich/impls_hir.rs
+++ b/src/librustc/ich/impls_hir.rs
@@ -253,7 +253,6 @@ impl_stable_hash_for!(enum hir::SyntheticTyParamKind {
 });
 
 impl_stable_hash_for!(struct hir::WhereClause {
-    id,
     hir_id,
     predicates
 });