diff --git a/contracts/eosio.system/include/eosio.system/native.hpp b/contracts/eosio.system/include/eosio.system/native.hpp
index a0931cde..d3805b13 100644
--- a/contracts/eosio.system/include/eosio.system/native.hpp
+++ b/contracts/eosio.system/include/eosio.system/native.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <eosio/action.hpp>
+#include <eosio/binary_extension.hpp>
 #include <eosio/contract.hpp>
 #include <eosio/crypto.hpp>
 #include <eosio/fixed_bytes.hpp>
@@ -11,6 +12,7 @@
 
 namespace eosiosystem {
 
+   using eosio::binary_extension;
    using eosio::checksum256;
    using eosio::ignore;
    using eosio::name;
@@ -233,9 +235,10 @@ namespace eosiosystem {
           *
           * @param account - the account for which to set the contract abi.
           * @param abi - the abi content to be set, in the form of a blob binary.
+          * @param memo - may be omitted
           */
          [[eosio::action]]
-         void setabi( const name& account, const std::vector<char>& abi );
+         void setabi( const name& account, const std::vector<char>& abi, const binary_extension<std::string>& memo );
 
          /**
           * Set code action sets the contract code for an account.
@@ -244,9 +247,11 @@ namespace eosiosystem {
           * @param vmtype - reserved, set it to zero.
           * @param vmversion - reserved, set it to zero.
           * @param code - the code content to be set, in the form of a blob binary..
+          * @param memo - may be omitted
           */
          [[eosio::action]]
-         void setcode( const name& account, uint8_t vmtype, uint8_t vmversion, const std::vector<char>& code ) {}
+         void setcode( const name& account, uint8_t vmtype, uint8_t vmversion, const std::vector<char>& code,
+                       const binary_extension<std::string>& memo ) {}
 
          using newaccount_action = eosio::action_wrapper<"newaccount"_n, &native::newaccount>;
          using updateauth_action = eosio::action_wrapper<"updateauth"_n, &native::updateauth>;
diff --git a/contracts/eosio.system/src/eosio.system.cpp b/contracts/eosio.system/src/eosio.system.cpp
index 202210c7..6dac14e6 100644
--- a/contracts/eosio.system/src/eosio.system.cpp
+++ b/contracts/eosio.system/src/eosio.system.cpp
@@ -358,7 +358,8 @@ namespace eosiosystem {
       set_resource_limits( newact, 0, 0, 0 );
    }
 
-   void native::setabi( const name& acnt, const std::vector<char>& abi ) {
+   void native::setabi( const name& acnt, const std::vector<char>& abi,
+                        const binary_extension<std::string>& memo ) {
       eosio::multi_index< "abihash"_n, abi_hash >  table(get_self(), get_self().value);
       auto itr = table.find( acnt.value );
       if( itr == table.end() ) {