diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index d3612302..48f6c5f4 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -644,9 +644,9 @@ testnet.block = {
 
 testnet.bip30 = {};
 
-testnet.activationThreshold = 1512; // 75% for testchains
+testnet.activationThreshold = 600; // 75% for testchains
 
-testnet.minerWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
+testnet.minerWindow = 800; // nPowTargetTimespan / nPowTargetSpacing
 
 testnet.deployments = {
   csv: {