diff --git a/src/currency_core/blockchain_storage.cpp b/src/currency_core/blockchain_storage.cpp
index 50d45bca..d22fc074 100644
--- a/src/currency_core/blockchain_storage.cpp
+++ b/src/currency_core/blockchain_storage.cpp
@@ -6425,6 +6425,7 @@ bool blockchain_storage::validate_alt_block_txs(const block& b, const crypto::ha
   uint64_t height = abei.height;
   bool r = false;
   std::set<crypto::hash> alt_chain_block_ids;
+
   
   alt_chain_block_ids.insert(id);
   // prepare data structure for output global indexes tracking within current alt chain
diff --git a/src/currency_core/blockchain_storage.h b/src/currency_core/blockchain_storage.h
index a892c1fa..334d4416 100644
--- a/src/currency_core/blockchain_storage.h
+++ b/src/currency_core/blockchain_storage.h
@@ -238,8 +238,9 @@ namespace currency
     template<class visitor_t>
     bool scan_outputkeys_for_indexes(const transaction &validated_tx, const txin_to_key& tx_in_to_key, visitor_t& vis) 
     { 
+      scan_for_keys_context cntx_stub = AUTO_VAL_INIT(cntx_stub);
       uint64_t stub = 0; 
-      return scan_outputkeys_for_indexes(validated_tx, tx_in_to_key, vis, stub); 
+      return scan_outputkeys_for_indexes(validated_tx, tx_in_to_key, vis, stub, cntx_stub);
     }
     template<class visitor_t>
     bool scan_outputkeys_for_indexes(const transaction &validated_tx, const txin_v& verified_input, visitor_t& vis, uint64_t& max_related_block_height, scan_for_keys_context& /*scan_context*/) const;