diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index 5f1b1412..8f2f33f0 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -540,7 +540,7 @@ testnet.checkpointMap = {
 
 testnet.lastCheckpoint = 2056;
 
-testnet.halvingInterval = 840000;
+testnet.halvingInterval = 800000;
 
 testnet.genesis = {
   version: 1,