diff --git a/src/cryptonote_protocol/cryptonote_protocol_handler.inl b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
index c5bc834a..66371f8a 100644
--- a/src/cryptonote_protocol/cryptonote_protocol_handler.inl
+++ b/src/cryptonote_protocol/cryptonote_protocol_handler.inl
@@ -270,7 +270,7 @@ namespace cryptonote
     m_core.set_target_blockchain_height(static_cast<int64_t>(hshd.current_height));
     int64_t diff = static_cast<int64_t>(hshd.current_height) - static_cast<int64_t>(m_core.get_current_blockchain_height());
 	int64_t max_block_height = max(static_cast<int64_t>(hshd.current_height),static_cast<int64_t>(m_core.get_current_blockchain_height()));
-	int64_t last_block_v1 = 1009826;
+	int64_t last_block_v1 = m_core.get_testnet() ? 624633 : 1009826;
 	int64_t diff_v2 = max_block_height > last_block_v1 ? min(abs(diff), max_block_height - last_block_v1) : 0;
     MCLOG(is_inital ? el::Level::Info : el::Level::Debug, "global", context <<  "Sync data returned a new top block candidate: " << m_core.get_current_blockchain_height() << " -> " << hshd.current_height
       << " [Your node is " << std::abs(diff) << " blocks (" << ((abs(diff) - diff_v2) / (24 * 60 * 60 / DIFFICULTY_TARGET_V1)) + (diff_v2 / (24 * 60 * 60 / DIFFICULTY_TARGET_V2)) << " days) "