diff --git a/lib/src/paper.rs b/lib/src/paper.rs
index d29a589..7d7a851 100644
--- a/lib/src/paper.rs
+++ b/lib/src/paper.rs
@@ -47,7 +47,7 @@ pub fn double_sha256(payload: &[u8]) -> Vec<u8> {
 /// to get these values. 
 /// Usually these will be different for testnet and for mainnet.
 pub struct CoinParams {
-    pub taddress_version: [u8; 2],
+    pub taddress_version: [u8; 1],
     pub tsecret_prefix  : [u8; 1],
     pub zaddress_prefix : String,
     pub zsecret_prefix  : String,
@@ -57,7 +57,7 @@ pub struct CoinParams {
 
 pub fn params() -> CoinParams {
         CoinParams {
-            taddress_version : [0x1C, 0xB8],
+            taddress_version : [0x3c],
             tsecret_prefix   : [0xBC],
             zaddress_prefix  : "zs".to_string(),
             zsecret_prefix   : "secret-extended-key-main".to_string(),