diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs
index c65f765e268f..24225d96ba47 100644
--- a/compiler/rustc_metadata/src/rmeta/encoder.rs
+++ b/compiler/rustc_metadata/src/rmeta/encoder.rs
@@ -758,8 +758,6 @@ impl EncodeContext<'a, 'tcx> {
         self.encode_generics(def_id);
         self.encode_explicit_predicates(def_id);
         self.encode_inferred_outlives(def_id);
-        self.encode_optimized_mir(def_id.expect_local());
-        self.encode_promoted_mir(def_id.expect_local());
     }
 
     fn encode_enum_variant_ctor(&mut self, def: &ty::AdtDef, index: VariantIdx) {