diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index 7c75f176..2d02b552 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -300,7 +300,7 @@ main.block = {
  * @default
  */
 
-main.witness = false;
+main.witness = true;
 
 /**
  * Whether to use segnet3-style segwit.