diff --git a/libraries/chain/db_maint.cpp b/libraries/chain/db_maint.cpp
index 0e9f0d97..2e945756 100644
--- a/libraries/chain/db_maint.cpp
+++ b/libraries/chain/db_maint.cpp
@@ -1955,7 +1955,7 @@ void database::perform_son_tasks()
    }
 }
 
-void update_son_asset(database& db)
+void update_son_params(database& db)
 {
    if( db.head_block_time() >= HARDFORK_SON2_TIME )
    {
@@ -1967,6 +1967,9 @@ void update_son_asset(database& db)
                               asset_issuer_permission_flags::override_authority;
          });
       }
+      db.modify( gpo, []( global_property_object& gpo ) {
+            gpo.parameters.extensions.value.maximum_son_count = 7;
+      });
    }
 }
 
@@ -1981,7 +1984,7 @@ void database::perform_chain_maintenance(const signed_block& next_block, const g
 
    rolling_period_start(*this);
 
-   update_son_asset(*this);
+   update_son_params(*this);
 
    struct vote_tally_helper {
       database& d;
diff --git a/programs/witness_node/genesis.json b/programs/witness_node/genesis.json
index 1e0610f4..d38f3e4e 100644
--- a/programs/witness_node/genesis.json
+++ b/programs/witness_node/genesis.json
@@ -392,7 +392,7 @@
       "son_deregister_time": 43200,
       "son_heartbeat_frequency": 180,
       "son_down_time": 360,
-      "maximum_son_count": 15
+      "maximum_son_count": 7
     }
   },
   "initial_bts_accounts": [],
diff --git a/tests/cli/son.cpp b/tests/cli/son.cpp
index 1d77608f..cf4fd8ed 100644
--- a/tests/cli/son.cpp
+++ b/tests/cli/son.cpp
@@ -345,7 +345,7 @@ BOOST_FIXTURE_TEST_CASE( select_top_fifteen_sons, cli_fixture )
       BOOST_TEST_MESSAGE("gpo: " << gpo.active_sons.size());
       BOOST_CHECK(generate_maintenance_block());
 
-      BOOST_CHECK(gpo.active_sons.size() == 15);
+      BOOST_CHECK(gpo.active_sons.size() == gpo.parameters.maximum_son_count());
 
    } catch( fc::exception& e ) {
       BOOST_TEST_MESSAGE("SON cli wallet tests exception");