diff --git a/libraries/chain/small_objects.cpp b/libraries/chain/small_objects.cpp
index 75a3906f..24166e4e 100644
--- a/libraries/chain/small_objects.cpp
+++ b/libraries/chain/small_objects.cpp
@@ -43,10 +43,6 @@
 #include <graphene/chain/witness_schedule_object.hpp>
 #include <graphene/chain/witness_scheduler.hpp>
 #include <graphene/chain/worker_object.hpp>
-#include <graphene/chain/game_object.hpp>
-#include <graphene/chain/tournament_object.hpp>
-#include <graphene/chain/match_object.hpp>
-#include <graphene/chain/betting_market_object.hpp>
 
 #include <fc/io/raw.hpp>
 
@@ -76,8 +72,3 @@ GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::witness_object
 GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::witness_scheduler )
 GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::witness_schedule_object )
 GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::worker_object )
-GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::game_object )
-GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::tournament_object )
-GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::match_object )
-GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::betting_market_group_object )
-GRAPHENE_EXTERNAL_SERIALIZATION( /*not extern*/, graphene::chain::betting_market_object )