diff --git a/src/expr.rs b/src/expr.rs
index 7273402ec76..ac96bedf2fe 100644
--- a/src/expr.rs
+++ b/src/expr.rs
@@ -366,7 +366,7 @@ pub(crate) fn format_expr(
                 ))
             }
         }
-        ast::ExprKind::Async(capture_by, _node_id, ref block) => {
+        ast::ExprKind::Async(capture_by, ref block) => {
             let mover = if capture_by == ast::CaptureBy::Value {
                 "move "
             } else {