diff --git a/src/wallet/wallet_rpc_server.cpp b/src/wallet/wallet_rpc_server.cpp
index 6395b6c6d..e8f49a3be 100644
--- a/src/wallet/wallet_rpc_server.cpp
+++ b/src/wallet/wallet_rpc_server.cpp
@@ -2269,7 +2269,7 @@ namespace tools
         rpc_transfers.amount       = td.amount();
         rpc_transfers.spent        = td.m_spent;
         rpc_transfers.global_index = td.m_global_output_index;
-        rpc_transfers.tx_hash      = epee::string_tools::pod_to_hex(td.m_txid);
+        rpc_transfers.tx_hash      = td.m_txid == crypto::null_hash ? "" : epee::string_tools::pod_to_hex(td.m_txid);
         rpc_transfers.subaddr_index = {td.m_subaddr_index.major, td.m_subaddr_index.minor};
         rpc_transfers.key_image    = td.m_key_image_known ? epee::string_tools::pod_to_hex(td.m_key_image) : "";
         rpc_transfers.pubkey       = epee::string_tools::pod_to_hex(td.get_public_key());
diff --git a/src/wallet/wallet_rpc_server_commands_defs.h b/src/wallet/wallet_rpc_server_commands_defs.h
index ebd55dac6..8a80dc24e 100644
--- a/src/wallet/wallet_rpc_server_commands_defs.h
+++ b/src/wallet/wallet_rpc_server_commands_defs.h
@@ -47,7 +47,7 @@
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define WALLET_RPC_VERSION_MAJOR 1
-#define WALLET_RPC_VERSION_MINOR 32
+#define WALLET_RPC_VERSION_MINOR 33
 #define MAKE_WALLET_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define WALLET_RPC_VERSION MAKE_WALLET_RPC_VERSION(WALLET_RPC_VERSION_MAJOR, WALLET_RPC_VERSION_MINOR)
 namespace tools
diff --git a/tests/functional_tests/cold_signing.py b/tests/functional_tests/cold_signing.py
index 542cb963c..09adbebc1 100755
--- a/tests/functional_tests/cold_signing.py
+++ b/tests/functional_tests/cold_signing.py
@@ -145,6 +145,9 @@ class ColdSigningTest():
             if do_check_key_images:
                 attributes_to_cmp.append("key_image")
             for i in range(len(hot_transfers_list)):
+                assert len(hot_transfers_list[i]['tx_hash']) == 64
+                assert hot_transfers_list[i]['tx_hash'] != '0' * 64
+                assert cold_transfers_list[i]['tx_hash'] == '', cold_transfers_list[i]['tx_hash']
                 for attr in attributes_to_cmp:
                     hot_val = hot_transfers_list[i][attr]
                     cold_val = cold_transfers_list[i][attr]