diff --git a/lib/protocol/networks.js b/lib/protocol/networks.js
index 62757421..3851d1b9 100644
--- a/lib/protocol/networks.js
+++ b/lib/protocol/networks.js
@@ -902,8 +902,8 @@ segnet4.keyPrefix = {
 segnet4.addressPrefix = {
   pubkeyhash: 0x1e,
   scripthash: 0x32,
-  witnesspubkeyhash: 0x03,
-  witnessscripthash: 0x28,
+  witnesspubkeyhash: 0x04,
+  witnessscripthash: 0x29,
   bech32: 'sg'
 };