diff --git a/lib/http/server.js b/lib/http/server.js
index 277aaf97..f9735765 100644
--- a/lib/http/server.js
+++ b/lib/http/server.js
@@ -307,7 +307,7 @@ HTTPServer.prototype._init = function _init() {
 
     if (params.accountKey) {
       enforce(typeof params.accountKey === 'string', 'accountKey must be a string.');
-      options.accountKey = HD.fromExtended(params.accountKey);
+      options.accountKey = HD.fromBase58(params.accountKey);
     }
 
     if (params.timeout != null) {
@@ -402,8 +402,8 @@ HTTPServer.prototype._init = function _init() {
     }
 
     if (params.master) {
-      enforce(typeof params.key === 'string', 'Key must be a string.');
-      options.master = HD.fromExtended(params.master);
+      enforce(typeof params.master === 'string', 'Key must be a string.');
+      options.master = HD.fromBase58(params.master);
     }
 
     if (params.mnemonic) {