diff --git a/contracts/eosio.system/delegate_bandwidth.cpp b/contracts/eosio.system/delegate_bandwidth.cpp
index 297623f1558172f619604adbca09c2de0775a567..dceca34b649477a612935f4556c180c69353c920 100644
--- a/contracts/eosio.system/delegate_bandwidth.cpp
+++ b/contracts/eosio.system/delegate_bandwidth.cpp
@@ -227,14 +227,13 @@ namespace eosiosystem {
             });
       }
       //create or replace deferred transaction
-      /* XXX
-      refund act;
-      act.owner = from;
+      //refund act;
+      //act.owner = from;
       eosio::transaction out( now() + refund_delay + refund_expiration_time );
-      out.actions.emplace_back( permission_level{ from, N(active) }, _self, N(refund), act );
+      out.actions.emplace_back( permission_level{ from, N(active) }, _self, N(refund), from );
       out.delay_sec = refund_delay;
       out.send( from, receiver );
-      */
+
       if ( asset(0) < unstake_net_quantity + unstake_cpu_quantity ) {
          decrease_voting_power( from, unstake_net_quantity + unstake_cpu_quantity );
       }
diff --git a/contracts/eosio.system/eosio.system.hpp b/contracts/eosio.system/eosio.system.hpp
index b6ce09a2c5d0a91debb137f5ccda7fa971e2456e..962aef8b2c1dad9d4e93a25559613aca77d5d635 100644
--- a/contracts/eosio.system/eosio.system.hpp
+++ b/contracts/eosio.system/eosio.system.hpp
@@ -69,7 +69,7 @@ namespace eosiosystem {
 
       uint64_t    primary_key()const { return owner;       }
       uint128_t   by_votes()const    { return total_votes; }
-      bool active() const { return packed_key.size() == sizeof(public_key); }
+      bool active() const { return 0 < packed_key.size(); }
 
       EOSLIB_SERIALIZE( producer_info, (owner)(total_votes)(prefs)(packed_key)
                         (per_block_payments)(last_rewards_claim)
diff --git a/contracts/eosio.system/voting.cpp b/contracts/eosio.system/voting.cpp
index 2423de77f1b0f773b839db8fd312c8aedd496e9e..4d47da4c425358d3156a280d970e7a1112f662ff 100644
--- a/contracts/eosio.system/voting.cpp
+++ b/contracts/eosio.system/voting.cpp
@@ -58,23 +58,27 @@ namespace eosiosystem {
     *  @pre authority of producer to register
     *
     */
-   void system_contract::regproducer( const account_name producer, const bytes& producer_key, const eosio_parameters& prefs ) {
+   void system_contract::regproducer( const account_name producer, const bytes& packed_producer_key, const eosio_parameters& prefs ) {
+      //eosio::print("produce_key: ", producer_key.size(), ", sizeof(public_key): ", sizeof(public_key), "\n");
       require_auth( producer );
 
       producers_table producers_tbl( _self, _self );
       auto prod = producers_tbl.find( producer );
 
+      //check that we can unpack producer key
+      public_key producer_key = eosio::unpack<public_key>( packed_producer_key );
+
       if ( prod != producers_tbl.end() ) {
          producers_tbl.modify( prod, producer, [&]( producer_info& info ){
                info.prefs = prefs;
-               info.packed_key = producer_key;
+               info.packed_key = eosio::pack<public_key>( producer_key );
             });
       } else {
          producers_tbl.emplace( producer, [&]( producer_info& info ){
                info.owner       = producer;
                info.total_votes = 0;
                info.prefs       = prefs;
-               info.packed_key  = producer_key;
+               info.packed_key  = eosio::pack<public_key>( producer_key );
             });
       }
    }
@@ -232,7 +236,8 @@ namespace eosiosystem {
             schedule.producers.emplace_back();
             schedule.producers.back().producer_name = it->owner;
             eosio_assert( sizeof(schedule.producers.back().block_signing_key) == it->packed_key.size(), "size mismatch" );
-            std::copy( it->packed_key.begin(), it->packed_key.end(), schedule.producers.back().block_signing_key.data.data() );
+            schedule.producers.back().block_signing_key = eosio::unpack<public_key>( it->packed_key );
+            //std::copy( it->packed_key.begin(), it->packed_key.end(), schedule.producers.back().block_signing_key.data.data() );
 
             base_per_transaction_net_usage[n] = it->prefs.base_per_transaction_net_usage;
             base_per_transaction_cpu_usage[n] = it->prefs.base_per_transaction_cpu_usage;