diff --git a/bip39-standalone.html b/bip39-standalone.html
index 41dcb99..9b3c4f1 100644
--- a/bip39-standalone.html
+++ b/bip39-standalone.html
@@ -15052,7 +15052,7 @@ var Mnemonic = function(language) {
     }
 
     function calcBip32RootKeyFromBase58(rootKeyBase58) {
-        bip32RootKey = bitcoin.HDNode.fromBase58(rootKeyBase58);
+        bip32RootKey = bitcoin.HDNode.fromBase58(rootKeyBase58, network);
     }
 
     function calcBip32ExtendedKey(path) {
diff --git a/src/js/index.js b/src/js/index.js
index 0599321..5cd09b6 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -207,7 +207,7 @@
     }
 
     function calcBip32RootKeyFromBase58(rootKeyBase58) {
-        bip32RootKey = bitcoin.HDNode.fromBase58(rootKeyBase58);
+        bip32RootKey = bitcoin.HDNode.fromBase58(rootKeyBase58, network);
     }
 
     function calcBip32ExtendedKey(path) {