diff --git a/pkg/testsuite/accounts.go b/pkg/testsuite/accounts.go
index 212a17899..80d2b659f 100644
--- a/pkg/testsuite/accounts.go
+++ b/pkg/testsuite/accounts.go
@@ -14,12 +14,13 @@ func (t *TestSuite) AssertAccountStake(accountID iotago.AccountID, validatorStak
 	nodes ...*mock.Node) {
 	for _, node := range nodes {
 		t.Eventually(func() error {
-			actualAccountData, exists, err := node.Protocol.MainEngineInstance().Ledger.Account(accountID, node.Protocol.MainEngineInstance().SyncManager.LatestCommitment().Slot())
+
+			actualAccountData, exists, err := node.Protocol.Engines.Main.Get().Ledger.Account(accountID, node.Protocol.Engines.Main.Get().SyncManager.LatestCommitment().Slot())
 			if err != nil {
 				return ierrors.Wrap(err, "AssertAccountData: failed to load account data")
 			}
 			if !exists {
-				return ierrors.Errorf("AssertAccountData: %s: account %s does not exist with latest committed slot %d", node.Name, accountID, node.Protocol.MainEngineInstance().SyncManager.LatestCommitment().Slot())
+				return ierrors.Errorf("AssertAccountData: %s: account %s does not exist with latest committed slot %d", node.Name, accountID, node.Protocol.Engines.Main.Get().SyncManager.LatestCommitment().Slot())
 			}
 
 			if accountID != actualAccountData.ID {
diff --git a/pkg/testsuite/mock/wallet_transactions.go b/pkg/testsuite/mock/wallet_transactions.go
index 76d48132d..911ba4622 100644
--- a/pkg/testsuite/mock/wallet_transactions.go
+++ b/pkg/testsuite/mock/wallet_transactions.go
@@ -101,7 +101,7 @@ func (w *Wallet) CreateDelegationFromInput(transactionName string, inputName str
 }
 
 func (w *Wallet) DelegationStartFromSlot(slot iotago.SlotIndex) iotago.EpochIndex {
-	latestCommitment := w.Node.Protocol.MainEngineInstance().Storage.Settings().LatestCommitment()
+	latestCommitment := w.Node.Protocol.Engines.Main.Get().Storage.Settings().LatestCommitment()
 	apiForSlot := w.Node.Protocol.APIForSlot(slot)
 
 	pastBoundedSlotIndex := latestCommitment.Slot() + apiForSlot.ProtocolParameters().MaxCommittableAge()
@@ -117,7 +117,7 @@ func (w *Wallet) DelegationStartFromSlot(slot iotago.SlotIndex) iotago.EpochInde
 }
 
 func (w *Wallet) DelegationEndFromSlot(slot iotago.SlotIndex) iotago.EpochIndex {
-	latestCommitment := w.Node.Protocol.MainEngineInstance().Storage.Settings().LatestCommitment()
+	latestCommitment := w.Node.Protocol.Engines.Main.Get().Storage.Settings().LatestCommitment()
 	apiForSlot := w.Node.Protocol.APIForSlot(slot)
 
 	futureBoundedSlotIndex := latestCommitment.Slot() + apiForSlot.ProtocolParameters().MinCommittableAge()