diff --git a/src/MatrixClientPeg.js b/src/MatrixClientPeg.js
index a1c820ee1..0b6c26496 100644
--- a/src/MatrixClientPeg.js
+++ b/src/MatrixClientPeg.js
@@ -24,11 +24,13 @@ var matrixClient = null;
 var localStorage = window.localStorage;
 if (localStorage) {
     var hs_url = localStorage.getItem("mx_hs_url");
+    var is_url = localStorage.getItem("mx_is_url") || 'https://matrix.org';
     var access_token = localStorage.getItem("mx_access_token");
     var user_id = localStorage.getItem("mx_user_id");
     if (access_token && user_id && hs_url) {
         matrixClient = Matrix.createClient({
             baseUrl: hs_url,
+            idBaseUrl: is_url,
             accessToken: access_token,
             userId: user_id
         });
@@ -44,8 +46,11 @@ module.exports = {
         matrixClient = cli;
     },
 
-    replaceUsingUrl: function(hs_url) {
-        matrixClient = Matrix.createClient(hs_url);
+    replaceUsingUrls: function(hs_url, is_url) {
+        matrixClient = Matrix.createClient({
+            baseUrl: hs_url,
+            idBaseUrl: is_url
+        });
     }
 };
 
diff --git a/src/controllers/molecules/ServerConfig.js b/src/controllers/molecules/ServerConfig.js
index 3cd5156ba..76909a148 100644
--- a/src/controllers/molecules/ServerConfig.js
+++ b/src/controllers/molecules/ServerConfig.js
@@ -30,7 +30,7 @@ module.exports = {
         return {
             onHsUrlChanged: function() {},
             onIsUrlChanged: function() {},
-            default_hs_url: 'https://matrix.org/',
+            default_hs_url: 'http://localhost:8008',
             default_is_url: 'https://matrix.org/'
         };
     },
diff --git a/src/controllers/templates/Login.js b/src/controllers/templates/Login.js
index a5bd43ccf..48ff6dc9f 100644
--- a/src/controllers/templates/Login.js
+++ b/src/controllers/templates/Login.js
@@ -42,8 +42,14 @@ module.exports = {
 
     onHSChosen: function(ev) {
         ev.preventDefault();
-        MatrixClientPeg.replaceUsingUrl(this.refs.serverConfig.getHsUrl());
-        this.setState({hs_url: this.refs.serverConfig.getHsUrl()});
+        MatrixClientPeg.replaceUsingUrls(
+            this.refs.serverConfig.getHsUrl(),
+            this.refs.serverConfig.getIsUrl()
+        );
+        this.setState({
+            hs_url: this.refs.serverConfig.getHsUrl(),
+            is_url: this.refs.serverConfig.getIsUrl()
+        });
         this.setStep("fetch_stages");
         var cli = MatrixClientPeg.get();
         this.setState({busy: true});
@@ -72,12 +78,14 @@ module.exports = {
             // XXX: we assume this means we're logged in, but there could be a next stage
             MatrixClientPeg.replace(Matrix.createClient({
                 baseUrl: that.state.hs_url,
+                idBaseUrl: that.state.is_url,
                 userId: data.user_id,
                 accessToken: data.access_token
             }));
             var localStorage = window.localStorage;
             if (localStorage) {
                 localStorage.setItem("mx_hs_url", that.state.hs_url);
+                localStorage.setItem("mx_is_url", that.state.is_url);
                 localStorage.setItem("mx_user_id", data.user_id);
                 localStorage.setItem("mx_access_token", data.access_token);
             } else {
diff --git a/src/controllers/templates/Register.js b/src/controllers/templates/Register.js
index 307a1dbe7..c562a79e7 100644
--- a/src/controllers/templates/Register.js
+++ b/src/controllers/templates/Register.js
@@ -87,7 +87,6 @@ module.exports = {
 
         if (this.savedParams.email != '') {
             return emailFlow;
-t
         } else {
             return otherFlow;
         }
@@ -95,8 +94,14 @@ t
 
     onInitialStageSubmit: function(ev) {
         ev.preventDefault();
-        MatrixClientPeg.replaceUsingUrl(this.refs.serverConfig.getHsUrl());
-        this.setState({hs_url: this.refs.serverConfig.getHsUrl()});
+        MatrixClientPeg.replaceUsingUrls(
+            this.refs.serverConfig.getHsUrl(),
+            this.refs.serverConfig.getIsUrl()
+        );
+        this.setState({
+            hs_url: this.refs.serverConfig.getHsUrl(),
+            is_url: this.refs.serverConfig.getIsUrl()
+        });
         var cli = MatrixClientPeg.get();
         this.setState({busy: true});
         var self = this;
@@ -119,7 +124,7 @@ t
                     busy: true
                 });
                 var cli = MatrixClientPeg.get();
-                this.savedParams.client_secret = cli.generarteClientSecret();
+                this.savedParams.client_secret = cli.generateClientSecret();
                 this.savedParams.send_attempt = 1;
                 cli.requestEmailToken(
                     this.savedParams.email,
@@ -150,6 +155,7 @@ t
     onRegistered: function(user_id, access_token) {
         MatrixClientPeg.replace(Matrix.createClient({
             baseUrl: this.state.hs_url,
+            idBaseUrl: this.state.is_url,
             userId: user_id,
             accessToken: access_token
         }));