diff --git a/validator/manager-init.cpp b/validator/manager-init.cpp
index 1a322c02..aa110380 100644
--- a/validator/manager-init.cpp
+++ b/validator/manager-init.cpp
@@ -354,7 +354,8 @@ void ValidatorManagerMasterchainStarter::got_init_block_handle(BlockHandle handl
 
 void ValidatorManagerMasterchainStarter::got_init_block_state(td::Ref<MasterchainState> state) {
   state_ = std::move(state);
-  CHECK(state_->get_block_id() == opts_->init_block_id() || state_->ancestor_is_valid(opts_->init_block_id()));
+  CHECK(state_->get_block_id() == opts_->init_block_id() || state_->ancestor_is_valid(opts_->init_block_id()) ||
+        state_->get_block_id().seqno() < opts_->get_last_fork_masterchain_seqno());
   //finish();
 
   auto P = td::PromiseCreator::lambda(