diff --git a/src/main/java/bdchain/api/AccountingChainClient.java b/src/main/java/bdchain/api/AccountingChainClient.java
index c8a65af..124b6e1 100644
--- a/src/main/java/bdchain/api/AccountingChainClient.java
+++ b/src/main/java/bdchain/api/AccountingChainClient.java
@@ -156,7 +156,7 @@ public class AccountingChainClient {
     }
   }
 
-  public ListenableFuture<Block> getTransactionByHash(String ledger, String hash) {
+  public ListenableFuture<Transaction> getTransactionByHash(String ledger, String hash) {
 
     info("*** getTransactionByHash: ledger={0} hash={1}", ledger, hash);
 
@@ -174,7 +174,7 @@ public class AccountingChainClient {
     }
   }
 
-  public Block getTransactionByHashSync(String ledger, String hash) {
+  public Transaction getTransactionByHashSync(String ledger, String hash) {
 
     info("*** getTransactionByHashSync: ledger={0} hash={1}", ledger, hash);