diff --git a/src/device/device_default.hpp b/src/device/device_default.hpp
index 649fed862..771fbba72 100644
--- a/src/device/device_default.hpp
+++ b/src/device/device_default.hpp
@@ -93,7 +93,7 @@ namespace hw {
             bool  sc_secret_add(crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) override;
             crypto::secret_key  generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key = crypto::secret_key(), bool recover = false) override;
             bool  generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) override;
-            bool  conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations);
+            bool  conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations) override;
             bool  derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) override;
             bool  derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec,  crypto::secret_key &derived_sec) override;
             bool  derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub,  crypto::public_key &derived_pub) override;
diff --git a/src/device/device_ledger.hpp b/src/device/device_ledger.hpp
index 9f73bd070..f1fcaab87 100644
--- a/src/device/device_ledger.hpp
+++ b/src/device/device_ledger.hpp
@@ -169,7 +169,7 @@ namespace hw {
         bool  sc_secret_add(crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) override;
         crypto::secret_key  generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key = crypto::secret_key(), bool recover = false) override;
         bool  generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) override;
-        bool  conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations);
+        bool  conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations) override;
         bool  derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) override;
         bool  derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec,  crypto::secret_key &derived_sec) override;
         bool  derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub,  crypto::public_key &derived_pub) override;