diff --git a/src/librustc_middle/query/mod.rs b/src/librustc_middle/query/mod.rs
index fdefb8eee2e..d94ba63017c 100644
--- a/src/librustc_middle/query/mod.rs
+++ b/src/librustc_middle/query/mod.rs
@@ -170,7 +170,7 @@ rustc_queries! {
 
         /// Fetch the MIR for a given `DefId` right after it's built - this includes
         /// unreachable code.
-        query mir_built(_: DefId) -> &'tcx Steal<mir::Body<'tcx>> {
+        query mir_built(_: LocalDefId) -> &'tcx Steal<mir::Body<'tcx>> {
             desc { "building MIR for" }
         }
 
diff --git a/src/librustc_mir/transform/mod.rs b/src/librustc_mir/transform/mod.rs
index a13ecdccc43..eced410d332 100644
--- a/src/librustc_mir/transform/mod.rs
+++ b/src/librustc_mir/transform/mod.rs
@@ -211,17 +211,21 @@ fn mir_const_qualif(tcx: TyCtxt<'_>, def_id: DefId) -> ConstQualifs {
 }
 
 fn mir_const(tcx: TyCtxt<'_>, def_id: DefId) -> &Steal<Body<'_>> {
+    let def_id = def_id.expect_local();
+
     // Unsafety check uses the raw mir, so make sure it is run
-    let _ = tcx.unsafety_check_result(def_id.expect_local());
+    let _ = tcx.unsafety_check_result(def_id);
 
     let mut body = tcx.mir_built(def_id).steal();
 
-    util::dump_mir(tcx, None, "mir_map", &0, MirSource::item(def_id), &body, |_, _| Ok(()));
+    util::dump_mir(tcx, None, "mir_map", &0, MirSource::item(def_id.to_def_id()), &body, |_, _| {
+        Ok(())
+    });
 
     run_passes(
         tcx,
         &mut body,
-        InstanceDef::Item(def_id),
+        InstanceDef::Item(def_id.to_def_id()),
         None,
         MirPhase::Const,
         &[&[
diff --git a/src/librustc_mir_build/build/mod.rs b/src/librustc_mir_build/build/mod.rs
index 4dbe4bf7628..a37c927b35a 100644
--- a/src/librustc_mir_build/build/mod.rs
+++ b/src/librustc_mir_build/build/mod.rs
@@ -21,8 +21,8 @@ use rustc_target::spec::PanicStrategy;
 
 use super::lints;
 
-crate fn mir_built(tcx: TyCtxt<'_>, def_id: DefId) -> &ty::steal::Steal<Body<'_>> {
-    tcx.alloc_steal_mir(mir_build(tcx, def_id.expect_local()))
+crate fn mir_built(tcx: TyCtxt<'_>, def_id: LocalDefId) -> &ty::steal::Steal<Body<'_>> {
+    tcx.alloc_steal_mir(mir_build(tcx, def_id))
 }
 
 /// Construct the MIR for a given `DefId`.