1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ra_hir_def/src/body.rs b/crates/ra_hir_def/src/body.rs
index 076d1a4fa..14a1f4773 100644
--- a/crates/ra_hir_def/src/body.rs
+++ b/crates/ra_hir_def/src/body.rs
@@ -184,7 +184,7 @@ pub struct Body {
     /// The `ExprId` of the actual body expression.
     pub body_expr: ExprId,
     pub item_scope: ItemScope,
-    pub parent_map: FxHashMap<ExprId, ExprId>,
+    pub parent_map: ArenaMap<ExprId, ExprId>,
 }
 
 pub type ExprPtr = AstPtr<ast::Expr>;