diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs
index f09a6bca0bd2..03d43977df96 100644
--- a/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs
+++ b/compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs
@@ -1,3 +1,4 @@
+// ignore-tidy-filelength
 use core::ops::ControlFlow;
 use std::borrow::Cow;
 use std::path::PathBuf;