1 files changed, 4 insertions, 3 deletions
diff --git a/compiler/rustc_middle/src/ty/parameterized.rs b/compiler/rustc_middle/src/ty/parameterized.rs
index a63a4eff5e1..47f9d9e61ad 100644
--- a/compiler/rustc_middle/src/ty/parameterized.rs
+++ b/compiler/rustc_middle/src/ty/parameterized.rs
@@ -1,6 +1,7 @@
-use rustc_data_structures::fx::FxHashMap;
+use rustc_data_structures::unord::UnordMap;
 use rustc_hir::def_id::DefIndex;
 use rustc_index::{Idx, IndexVec};
+use std::hash::Hash;
 
 use crate::ty;
 
@@ -24,8 +25,8 @@ impl<I: Idx + 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for IndexVe
     type Value<'tcx> = IndexVec<I, T::Value<'tcx>>;
 }
 
-impl<I: 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for FxHashMap<I, T> {
-    type Value<'tcx> = FxHashMap<I, T::Value<'tcx>>;
+impl<I: Hash + Eq + 'static, T: ParameterizedOverTcx> ParameterizedOverTcx for UnordMap<I, T> {
+    type Value<'tcx> = UnordMap<I, T::Value<'tcx>>;
 }
 
 impl<T: ParameterizedOverTcx> ParameterizedOverTcx for ty::Binder<'static, T> {