diff --git a/source/contract/contract-samples/src/main/java/com/jd/blockchain/contract/TransferContractImpl.java b/source/contract/contract-samples/src/main/java/com/jd/blockchain/contract/TransferContractImpl.java
index 1a3d702b..c312dd4f 100644
--- a/source/contract/contract-samples/src/main/java/com/jd/blockchain/contract/TransferContractImpl.java
+++ b/source/contract/contract-samples/src/main/java/com/jd/blockchain/contract/TransferContractImpl.java
@@ -6,7 +6,7 @@ import com.jd.blockchain.ledger.KVDataEntry;
 import com.jd.blockchain.ledger.KVDataVO;
 import com.jd.blockchain.ledger.KVInfoVO;
 
-public class TransferContractImpl implements EventProcessingAwire, TransferContract {
+public class TransferContractImpl implements EventProcessingAware, TransferContract {
 
     private ContractEventContext eventContext;