diff --git a/dot/parachain/dispute/backend.go b/dot/parachain/dispute/backend.go
index 2c4724daf9..56526c40f8 100644
--- a/dot/parachain/dispute/backend.go
+++ b/dot/parachain/dispute/backend.go
@@ -49,37 +49,33 @@ type DBBackend interface {
 }
 
 type syncedEarliestSession struct {
-	*sync.RWMutex
+	sync.RWMutex
 	*parachainTypes.SessionIndex
 }
 
 func newSyncedEarliestSession() syncedEarliestSession {
-	return syncedEarliestSession{
-		RWMutex: new(sync.RWMutex),
-	}
+	return syncedEarliestSession{}
 }
 
 type syncedRecentDisputes struct {
-	*sync.RWMutex
+	sync.RWMutex
 	*btree.BTree
 }
 
 func newSyncedRecentDisputes() syncedRecentDisputes {
 	return syncedRecentDisputes{
-		RWMutex: new(sync.RWMutex),
-		BTree:   btree.New(types.DisputeComparator),
+		BTree: btree.New(types.DisputeComparator),
 	}
 }
 
 type syncedCandidateVotes struct {
-	*sync.RWMutex
+	sync.RWMutex
 	votes map[types.Comparator]*types.CandidateVotes
 }
 
 func newSyncedCandidateVotes() syncedCandidateVotes {
 	return syncedCandidateVotes{
-		RWMutex: new(sync.RWMutex),
-		votes:   make(map[types.Comparator]*types.CandidateVotes),
+		votes: make(map[types.Comparator]*types.CandidateVotes),
 	}
 }
 
diff --git a/dot/parachain/dispute/participation_test.go b/dot/parachain/dispute/participation_test.go
index 929592fae5..b7db76e840 100644
--- a/dot/parachain/dispute/participation_test.go
+++ b/dot/parachain/dispute/participation_test.go
@@ -321,6 +321,7 @@ func TestParticipationHandler_Queue(t *testing.T) {
 	})
 
 	t.Run("cannot_participate_if_cannot_recover_validation_code", func(t *testing.T) {
+		t.Parallel()
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
 
@@ -378,6 +379,7 @@ func TestParticipationHandler_Queue(t *testing.T) {
 	})
 
 	t.Run("cast_invalid_vote_if_available_data_is_invalid", func(t *testing.T) {
+		t.Parallel()
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
 
@@ -425,6 +427,7 @@ func TestParticipationHandler_Queue(t *testing.T) {
 	})
 
 	t.Run("cast_invalid_vote_if_validation_fails_or_is_invalid", func(t *testing.T) {
+		t.Parallel()
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()