diff --git a/libraries/chain/include/graphene/chain/hardfork.hpp b/libraries/chain/include/graphene/chain/hardfork.hpp
index 2994381e..eba6ba86 100644
--- a/libraries/chain/include/graphene/chain/hardfork.hpp
+++ b/libraries/chain/include/graphene/chain/hardfork.hpp
@@ -87,7 +87,7 @@
 
 #ifndef HARDFORK_1015_TIME
 // disable udpate_contract for normal account
-#define HARDFORK_1015_TIME (fc::time_point_sec( 1545998400 )) // for mainnet, 2018-12-28T12:00:00 UTC
+#define HARDFORK_1015_TIME (fc::time_point_sec( 1546084800 )) // for mainnet, 2018-12-29T12:00:00 UTC
 #endif
 
 // #413 Add operation to claim asset fees