diff --git a/internal/fakechain/fakechain.go b/internal/fakechain/fakechain.go
index 907bbe3..3753230 100644
--- a/internal/fakechain/fakechain.go
+++ b/internal/fakechain/fakechain.go
@@ -364,6 +364,11 @@ func (chain *FakeChain) GetUtilityTokenBalance(uint160 util.Uint160) *big.Int {
 	panic("TODO")
 }
 
+// IsVitaFeeExempt implements Feer interface.
+func (chain *FakeChain) IsVitaFeeExempt(util.Uint160) bool {
+	return false
+}
+
 // PoolTx implements the Blockchainer interface.
 func (chain *FakeChain) PoolTx(tx *transaction.Transaction, _ ...*mempool.Pool) error {
 	txf := chain.PoolTxF.Load().(func(*transaction.Transaction) error)