diff --git a/libraries/chain/db_maint.cpp b/libraries/chain/db_maint.cpp
index 07bb4bc6..bfa131c1 100644
--- a/libraries/chain/db_maint.cpp
+++ b/libraries/chain/db_maint.cpp
@@ -1974,7 +1974,7 @@ 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 )
    {
@@ -1986,6 +1986,9 @@ 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 = 9;
+      });
    }
 }
 
@@ -2000,7 +2003,7 @@ 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/libraries/chain/include/graphene/chain/config.hpp b/libraries/chain/include/graphene/chain/config.hpp
index 09b50d80..f3048608 100644
--- a/libraries/chain/include/graphene/chain/config.hpp
+++ b/libraries/chain/include/graphene/chain/config.hpp
@@ -93,7 +93,7 @@
 #define GRAPHENE_DEFAULT_MIN_SON_COUNT                        (5)
 #define GRAPHENE_DEFAULT_MAX_WITNESSES                        (1001) // SHOULD BE ODD
 #define GRAPHENE_DEFAULT_MAX_COMMITTEE                        (1001) // SHOULD BE ODD
-#define GRAPHENE_DEFAULT_MAX_SONS                             (7)
+#define GRAPHENE_DEFAULT_MAX_SONS                             (15)
 #define GRAPHENE_DEFAULT_MAX_PROPOSAL_LIFETIME_SEC            (60*60*24*7*4) // Four weeks
 #define GRAPHENE_DEFAULT_COMMITTEE_PROPOSAL_REVIEW_PERIOD_SEC (60*60*24*7*2) // Two weeks
 #define GRAPHENE_DEFAULT_NETWORK_PERCENT_OF_FEE               (20*GRAPHENE_1_PERCENT)