diff --git a/src/cryptonote_core/cryptonote_tx_utils.cpp b/src/cryptonote_core/cryptonote_tx_utils.cpp
index 19ed57aba..14d0d6e4e 100644
--- a/src/cryptonote_core/cryptonote_tx_utils.cpp
+++ b/src/cryptonote_core/cryptonote_tx_utils.cpp
@@ -157,7 +157,7 @@ namespace cryptonote
     return destinations[0].addr.m_view_public_key;
   }
   //---------------------------------------------------------------
-  bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, std::vector<tx_source_entry> sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, bool rct)
+  bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, bool rct)
   {
     std::vector<rct::key> amount_keys;
     tx.set_null();
@@ -488,7 +488,7 @@ namespace cryptonote
     return true;
   }
   //---------------------------------------------------------------
-  bool construct_tx(const account_keys& sender_account_keys, const std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time)
+  bool construct_tx(const account_keys& sender_account_keys, std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time)
   {
      crypto::secret_key tx_key;
      return construct_tx_and_get_tx_key(sender_account_keys, sources, destinations, extra, tx, unlock_time, tx_key);
diff --git a/src/cryptonote_core/cryptonote_tx_utils.h b/src/cryptonote_core/cryptonote_tx_utils.h
index 69254fb5f..f2cc73545 100644
--- a/src/cryptonote_core/cryptonote_tx_utils.h
+++ b/src/cryptonote_core/cryptonote_tx_utils.h
@@ -70,8 +70,8 @@ namespace cryptonote
 
   //---------------------------------------------------------------
   crypto::public_key get_destination_view_key_pub(const std::vector<tx_destination_entry> &destinations, const account_keys &sender_keys);
-  bool construct_tx(const account_keys& sender_account_keys, const std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time);
-  bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, std::vector<tx_source_entry> sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, bool rct = false);
+  bool construct_tx(const account_keys& sender_account_keys, std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time);
+  bool construct_tx_and_get_tx_key(const account_keys& sender_account_keys, std::vector<tx_source_entry>& sources, const std::vector<tx_destination_entry>& destinations, std::vector<uint8_t> extra, transaction& tx, uint64_t unlock_time, crypto::secret_key &tx_key, bool rct = false);
 
   bool generate_genesis_block(
       block& bl
diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index 08e1d2a09..847e66755 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -3334,7 +3334,7 @@ bool wallet2::sign_tx(unsigned_tx_set &exported_txs, const std::string &signed_f
   signed_tx_set signed_txes;
   for (size_t n = 0; n < exported_txs.txes.size(); ++n)
   {
-    const tools::wallet2::tx_construction_data &sd = exported_txs.txes[n];
+    tools::wallet2::tx_construction_data &sd = exported_txs.txes[n];
     LOG_PRINT_L1(" " << (n+1) << ": " << sd.sources.size() << " inputs, ring size " << sd.sources[0].outputs.size());
     signed_txes.ptx.push_back(pending_tx());
     tools::wallet2::pending_tx &ptx = signed_txes.ptx.back();