diff --git a/src/currency_core/currency_config.h b/src/currency_core/currency_config.h
index 5253da90..cb9b0dcb 100644
--- a/src/currency_core/currency_config.h
+++ b/src/currency_core/currency_config.h
@@ -217,7 +217,7 @@
 #define BLOCK_MINOR_VERSION_GENESIS                     0
 #define BLOCK_MAJOR_VERSION_INITAL                      0
 #ifndef TESTNET
-#define ZANO_HARDFORK_1_AFTER_HEIGHT                    166440
+#define ZANO_HARDFORK_1_AFTER_HEIGHT                    172200
 #else
 #define ZANO_HARDFORK_1_AFTER_HEIGHT                    1440
 #endif