diff --git a/polkadot/bridges/modules/grandpa/src/lib.rs b/polkadot/bridges/modules/grandpa/src/lib.rs
index 4c1b16b7c2..05dc7c7002 100644
--- a/polkadot/bridges/modules/grandpa/src/lib.rs
+++ b/polkadot/bridges/modules/grandpa/src/lib.rs
@@ -620,9 +620,7 @@ pub fn initialize_for_benchmarks<T: Config<I>, I: 'static>(header: BridgedHeader
 #[cfg(test)]
 mod tests {
 	use super::*;
-	use crate::mock::{
-		run_test, test_header, Origin, TestHash, TestHeader, TestNumber, TestRuntime,
-	};
+	use crate::mock::{run_test, test_header, Origin, TestHeader, TestNumber, TestRuntime};
 	use bp_test_utils::{
 		authority_list, make_default_justification, make_justification_for_header,
 		JustificationGeneratorParams, ALICE, BOB,
@@ -672,7 +670,7 @@ mod tests {
 		let _ = Pallet::<TestRuntime>::on_initialize(current_number);
 	}
 
-	fn change_log(delay: u64) -> Digest<TestHash> {
+	fn change_log(delay: u64) -> Digest {
 		let consensus_log =
 			ConsensusLog::<TestNumber>::ScheduledChange(sp_finality_grandpa::ScheduledChange {
 				next_authorities: vec![(ALICE.into(), 1), (BOB.into(), 1)],