diff --git a/compiler/rustc_hir/src/hir.rs b/compiler/rustc_hir/src/hir.rs
index e5829b1c4f71..658e20bcaa9d 100644
--- a/compiler/rustc_hir/src/hir.rs
+++ b/compiler/rustc_hir/src/hir.rs
@@ -1,3 +1,4 @@
+// ignore-tidy-filelength
 use crate::def::{DefKind, Namespace, Res};
 use crate::def_id::DefId;
 crate use crate::hir_id::HirId;