diff --git a/src/currency_core/blockchain_storage.cpp b/src/currency_core/blockchain_storage.cpp
index 5a764eb5..5e2569be 100644
--- a/src/currency_core/blockchain_storage.cpp
+++ b/src/currency_core/blockchain_storage.cpp
@@ -2625,7 +2625,7 @@ bool blockchain_storage::find_blockchain_supplement(const std::list<crypto::hash
     blocks.back().first = m_db_blocks[i];
     std::list<crypto::hash> mis;
     get_transactions_direct(m_db_blocks[i]->bl.tx_hashes, blocks.back().second, mis);
-    CHECK_AND_ASSERT_MES(!mis.size(), false, "internal error, transaction from block not found");
+    CHECK_AND_ASSERT_MES(!mis.size(), false, "internal error, transaction from block " << get_block_hash(m_db_blocks[i]->bl) << "[" << i << "] not found" );
   }
   return true;
 }