diff --git a/littercoin/lib/helios.mjs b/littercoin/lib/helios.mjs
index 0675fb087..2523d17a9 100644
--- a/littercoin/lib/helios.mjs
+++ b/littercoin/lib/helios.mjs
@@ -252,7 +252,7 @@ const TAB = "  ";
  * Set to false if using the library for mainnet (impacts Addresses)
  * @type {boolean}
  */
-export var IS_TESTNET = true;
+export var IS_TESTNET = false;
 
 /**
  * Calculating the execution budget during tx building requires knowing all the inputs beforehand,