diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 5cebc7c23..f50720a77 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -3524,6 +3524,7 @@ void wallet2::detach_blockchain(uint64_t height, std::map<std::pair<uint64_t, ui
     THROW_WALLET_EXCEPTION_IF(it_pk == m_pub_keys.end(), error::wallet_internal_error, "public key not found");
     m_pub_keys.erase(it_pk);
   }
+  transfers_detached = std::distance(it, m_transfers.end());
   m_transfers.erase(it, m_transfers.end());
 
   size_t blocks_detached = m_blockchain.size() - height;