diff --git a/multinode/adaptor.go b/multinode/adaptor.go
index 86d2ba3..3898460 100644
--- a/multinode/adaptor.go
+++ b/multinode/adaptor.go
@@ -58,11 +58,11 @@ func (m *Adapter[RPC, HEAD]) LenSubs() int {
 }
 
 // RegisterSub adds the sub to the Adaptor list and returns a sub which is managed on unsubscribe
-func (m *Adapter[RPC, HEAD]) RegisterSub(sub Subscription, stopInFLightCh chan struct{}) (*ManagedSubscription, error) {
+func (m *Adapter[RPC, HEAD]) RegisterSub(sub Subscription) (*ManagedSubscription, error) {
 	// ensure that the `sub` belongs to current life cycle of the `rpcMultiNodeAdapter` and it should not be killed due to
 	// previous `DisconnectAll` call.
 	select {
-	case <-stopInFLightCh:
+	case <-m.chStopInFlight:
 		sub.Unsubscribe()
 		return nil, fmt.Errorf("failed to register subscription - all in-flight requests were canceled")
 	default:
diff --git a/multinode/adaptor_test.go b/multinode/adaptor_test.go
index 70eb104..36a1c5c 100644
--- a/multinode/adaptor_test.go
+++ b/multinode/adaptor_test.go
@@ -29,10 +29,6 @@ func LatestBlock(ctx context.Context, rpc *testRPC) (*testHead, error) {
 	return &testHead{rpc.latestBlock}, nil
 }
 
-func ptr[T any](t T) *T {
-	return &t
-}
-
 func newTestClient(t *testing.T) *Adapter[testRPC, *testHead] {
 	requestTimeout := 5 * time.Second
 	lggr := logger.Test(t)