diff --git a/rustfmt_excluded_files b/rustfmt_excluded_files
index f5c7323d2de..a6f59779e10 100644
--- a/rustfmt_excluded_files
+++ b/rustfmt_excluded_files
@@ -202,7 +202,6 @@
 ./lightning/src/ln/offers_tests.rs
 ./lightning/src/ln/onion_payment.rs
 ./lightning/src/ln/onion_route_tests.rs
-./lightning/src/ln/onion_utils.rs
 ./lightning/src/ln/outbound_payment.rs
 ./lightning/src/ln/payment_tests.rs
 ./lightning/src/ln/peer_channel_encryptor.rs