diff --git a/tests/unit_tests/hardfork.cpp b/tests/unit_tests/hardfork.cpp
index e20f58a5..7432c03e 100644
--- a/tests/unit_tests/hardfork.cpp
+++ b/tests/unit_tests/hardfork.cpp
@@ -57,6 +57,10 @@ public:
   virtual void batch_start(uint64_t batch_num_blocks=0) {}
   virtual void batch_stop() {}
   virtual void set_batch_transactions(bool) {}
+  virtual void block_txn_start() {}
+  virtual void block_txn_stop() {}
+  virtual void block_txn_abort() {}
+  virtual void drop_hard_fork_info() {}
   virtual bool block_exists(const crypto::hash& h) const { return false; }
   virtual block get_block(const crypto::hash& h) const { return block(); }
   virtual uint64_t get_block_height(const crypto::hash& h) const { return 0; }