diff --git a/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp b/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp
index 31fa6ce0..fa0bc33d 100644
--- a/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp
+++ b/libraries/chain/include/graphene/chain/protocol/chain_parameters.hpp
@@ -116,10 +116,10 @@ namespace graphene { namespace chain {
       inline uint16_t sweeps_distribution_percentage()const {
          return extensions.value.sweeps_distribution_percentage.valid() ? *extensions.value.sweeps_distribution_percentage : SWEEPS_DEFAULT_DISTRIBUTION_PERCENTAGE;
       }
-      inline uint16_t sweeps_distribution_asset()const {
+      inline asset_id_type sweeps_distribution_asset()const {
          return extensions.value.sweeps_distribution_asset.valid() ? *extensions.value.sweeps_distribution_asset : SWEEPS_DEFAULT_DISTRIBUTION_ASSET;
       }
-      inline uint16_t sweeps_vesting_accumulator_account()const {
+      inline account_id_type sweeps_vesting_accumulator_account()const {
          return extensions.value.sweeps_vesting_accumulator_account.valid() ? *extensions.value.sweeps_vesting_accumulator_account : SWEEPS_ACCUMULATOR_ACCOUNT;
       }
    };