diff --git a/network/src/consensus.rs b/network/src/consensus.rs
index 18db1201..e77df26b 100644
--- a/network/src/consensus.rs
+++ b/network/src/consensus.rs
@@ -90,7 +90,7 @@ impl ConsensusParams {
 						bit: 1,
 						start_time: 1479168000,
 						timeout: 1510704000,
-						activation: None,
+						activation: Some(481824),
 					}),
 					ConsensusFork::BitcoinCash(_) => None,
 				},
@@ -117,7 +117,7 @@ impl ConsensusParams {
 						bit: 1,
 						start_time: 1462060800,
 						timeout: 1493596800,
-						activation: None,
+						activation: Some(834624),
 					}),
 					ConsensusFork::BitcoinCash(_) => None,
 				},
@@ -144,7 +144,7 @@ impl ConsensusParams {
 						bit: 1,
 						start_time: 0,
 						timeout: ::std::u32::MAX,
-						activation: None,
+						activation: Some(0),
 					}),
 					ConsensusFork::BitcoinCash(_) => None,
 				},