diff --git a/config/config.exs b/config/config.exs
index 97bf5c466..22e512fe4 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -12,7 +12,7 @@ config :mobilizon,
 config :mobilizon, :instance,
   name: System.get_env("MOBILIZON_INSTANCE_NAME") || "Localhost",
   version: "1.0.0-dev",
-  registrations_open: System.get_env("MOBILIZON_INSTANCE_REGISTRATIONS_OPEN") || true
+  registrations_open: System.get_env("MOBILIZON_INSTANCE_REGISTRATIONS_OPEN") || false
 
 config :mime, :types, %{
   "application/activity+json" => ["activity-json"],
diff --git a/config/test.exs b/config/test.exs
index 3339f23a3..1ace33015 100644
--- a/config/test.exs
+++ b/config/test.exs
@@ -1,5 +1,9 @@
 use Mix.Config
 
+config :mobilizon, :instance,
+  name: "Test instance",
+  registrations_open: true
+
 # We don't run a server during test. If one is required,
 # you can enable the server option below.
 config :mobilizon, MobilizonWeb.Endpoint,
diff --git a/js/src/components/NavBar.vue b/js/src/components/NavBar.vue
index 4eac95233..855ea2eea 100644
--- a/js/src/components/NavBar.vue
+++ b/js/src/components/NavBar.vue
@@ -18,7 +18,7 @@
     <div class="navbar-end">
       <div class="navbar-item">
         <div class="buttons">
-          <router-link class="button is-primary" v-if="!currentUser.id" :to="{ name: 'Register' }">
+          <router-link class="button is-primary" v-if="!currentUser.id && config && config.registrationsOpen" :to="{ name: 'Register' }">
             <strong>
               <translate>Sign up</translate>
             </strong>
@@ -51,6 +51,8 @@ import { deleteUserData } from '@/utils/auth';
 import { LOGGED_PERSON } from '@/graphql/actor';
 import { IActor, IPerson } from '@/types/actor.model';
 import { RouteName } from '@/router';
+import { CONFIG } from '@/graphql/config';
+import { IConfig } from '@/types/config.model';
 
 @Component({
   apollo: {
@@ -71,7 +73,10 @@ import { RouteName } from '@/router';
     loggedPerson: {
       query: LOGGED_PERSON,
     },
-  },
+    config: {
+      query: CONFIG,
+    }
+  }
 })
 export default class NavBar extends Vue {
   notifications = [
@@ -83,6 +88,7 @@ export default class NavBar extends Vue {
   searchText: string | null = null;
   searchSelect = null;
   loggedPerson!: IPerson;
+  config!: IConfig;
 
   get items() {
     return this.search.map(searchEntry => {
diff --git a/js/src/graphql/config.ts b/js/src/graphql/config.ts
index 07a16aba0..46a73409f 100644
--- a/js/src/graphql/config.ts
+++ b/js/src/graphql/config.ts
@@ -1,40 +1,10 @@
 import gql from 'graphql-tag';
 
-export const CREATE_USER = gql`
-mutation CreateUser($email: String!, $password: String!) {
-  createUser(email: $email, password: $password) {
-    email,
-    confirmationSentAt
-  }
-}
-`;
-
-export const VALIDATE_USER = gql`
-mutation ValidateUser($token: String!) {
-  validateUser(token: $token) {
-    token,
-    user {
-      id,
-      email,
-      defaultActor {
-        id
-      }
-    }
-  }
-}
-`;
-
-export const CURRENT_USER_CLIENT = gql`
+export const CONFIG = gql`
 query {
-  currentUser @client {
-    id,
-    email
+  config {
+    name,
+    registrationsOpen
   }
 }
 `;
-
-export const UPDATE_CURRENT_USER_CLIENT = gql`
-mutation UpdateCurrentUser($id: Int!, $email: String!) {
-  updateCurrentUser(id: $id, email: $email) @client
-}
-`;
diff --git a/js/src/types/config.model.ts b/js/src/types/config.model.ts
index d3d3335e8..78ff7d284 100644
--- a/js/src/types/config.model.ts
+++ b/js/src/types/config.model.ts
@@ -1,7 +1,5 @@
-import { ICurrentUser } from '@/types/current-user.model';
+export interface IConfig {
+  name: string,
 
-export interface ILogin {
-  user: ICurrentUser,
-
-  token: string,
+  registrationsOpen: boolean,
 }
diff --git a/js/src/views/User/Login.vue b/js/src/views/User/Login.vue
index 770649bda..196ade974 100644
--- a/js/src/views/User/Login.vue
+++ b/js/src/views/User/Login.vue
@@ -37,7 +37,7 @@
                 <translate>Forgot your password ?</translate>
               </router-link>
             </div>
-            <div class="control">
+            <div class="control" v-if="config && config.registrationsOpen">
               <router-link
                 class="button is-text"
                 :to="{ name: 'Register', params: { default_email: credentials.email, default_password: credentials.password }}"
@@ -61,12 +61,21 @@ import { ILogin } from '@/types/login.model';
 import { UPDATE_CURRENT_USER_CLIENT } from '@/graphql/user';
 import { onLogin } from '@/vue-apollo';
 import { RouteName } from '@/router';
+import { IConfig } from '@/types/config.model';
+import { CONFIG } from '@/graphql/config';
 
-@Component
+@Component({
+  apollo: {
+    config: {
+      query: CONFIG
+    }
+  }
+})
 export default class Login extends Vue {
   @Prop({ type: String, required: false, default: '' }) email!: string;
   @Prop({ type: String, required: false, default: '' }) password!: string;
 
+  config!: IConfig;
   credentials = {
     email: '',
     password: '',
diff --git a/lib/mobilizon/common-config.ex b/lib/mobilizon/common-config.ex
index d713c0187..e7712516e 100644
--- a/lib/mobilizon/common-config.ex
+++ b/lib/mobilizon/common-config.ex
@@ -1,7 +1,20 @@
 defmodule Mobilizon.CommonConfig do
-  def registrations_open?(), do: instance_config() |> get_in([:registrations_open])
+  @moduledoc """
+  Instance configuration wrapper
+  """
 
-  def instance_name(), do: instance_config() |> get_in([:name])
+  def registrations_open?() do
+    instance_config()
+    |> get_in([:registrations_open])
+    |> to_bool
+  end
+
+  def instance_name() do
+    instance_config()
+    |> get_in([:name])
+  end
 
   defp instance_config(), do: Application.get_env(:mobilizon, :instance)
+
+  defp to_bool(v), do: v == true or v == "true" or v == "True"
 end
diff --git a/lib/mobilizon_web/resolvers/config.ex b/lib/mobilizon_web/resolvers/config.ex
index 931403c99..f9b7b5569 100644
--- a/lib/mobilizon_web/resolvers/config.ex
+++ b/lib/mobilizon_web/resolvers/config.ex
@@ -2,7 +2,7 @@ defmodule MobilizonWeb.Resolvers.Config do
   @moduledoc """
   Handles the config-related GraphQL calls
   """
-  require Logger
+
   import Mobilizon.CommonConfig
 
   @doc """
diff --git a/test/mobilizon_web/resolvers/config_resolver_test.exs b/test/mobilizon_web/resolvers/config_resolver_test.exs
index bdbbc0b91..d9cb1bc97 100644
--- a/test/mobilizon_web/resolvers/config_resolver_test.exs
+++ b/test/mobilizon_web/resolvers/config_resolver_test.exs
@@ -18,7 +18,7 @@ defmodule MobilizonWeb.Resolvers.ConfigResolverTest do
         context.conn
         |> get("/api", AbsintheHelpers.query_skeleton(query, "config"))
 
-      assert json_response(res, 200)["data"]["config"]["name"] == "Localhost"
+      assert json_response(res, 200)["data"]["config"]["name"] == "Test instance"
       assert json_response(res, 200)["data"]["config"]["registrationsOpen"] == true
     end
   end