diff --git a/README.md b/README.md
index 8e62e16..4963e96 100644
--- a/README.md
+++ b/README.md
@@ -70,5 +70,5 @@ Modifier le fichier de configuration créé dans `instance/`
 - [ ] Modifier son mot de passe
 - [ ] Supprimer un utilisateur
 - [ ] Ajouter config:DISABLE_DARK_MODE
-- [ ] Ajouter config:DISABLE_REGISTER
+- [x] Ajouter config:DISABLE_REGISTER
 - [ ] Ajouter config:ONLINE_SEARCH_BASE_QUERY pour la recherche google, actuellement 'filetype:pdf partition'
diff --git a/default_config.py b/default_config.py
index 70c9c5e..e3b0ac4 100644
--- a/default_config.py
+++ b/default_config.py
@@ -7,4 +7,9 @@ SECRET_KEY="dev"
 
 # Port to run on
 PORT="5000"
-MAX_ONLINE_QUERIES=3
\ No newline at end of file
+
+# Number of online queries an "normal user" can do
+MAX_ONLINE_QUERIES=3
+
+# Disable registration of new users via /auth/register (they can still be added by root)
+DISABLE_REGISTER=False
\ No newline at end of file
diff --git a/partitioncloud/modules/auth.py b/partitioncloud/modules/auth.py
index 210f4f3..ad41d89 100644
--- a/partitioncloud/modules/auth.py
+++ b/partitioncloud/modules/auth.py
@@ -13,7 +13,8 @@ from flask import (
     request,
     session,
     url_for,
-    flash
+    flash,
+    current_app
 )
 from werkzeug.security import check_password_hash, generate_password_hash
 
@@ -76,6 +77,10 @@ def register():
     Validates that the username is not already taken. Hashes the
     password for security.
     """
+    if current_app.config["DISABLE_REGISTER"]:
+        flash("L'enregistrement de nouveaux utilisateurs a été désactivé par l'administrateur.")
+        return redirect(url_for("auth.login"))
+
     if request.method == "POST":
         username = request.form["username"]
         password = request.form["password"]
diff --git a/partitioncloud/templates/base.html b/partitioncloud/templates/base.html
index d8f54d3..8cc5c2e 100644
--- a/partitioncloud/templates/base.html
+++ b/partitioncloud/templates/base.html
@@ -117,7 +117,9 @@
             <div class="username">{{ user.username }}</div>
           </div>
         {% else %}
-          <a href="{{ url_for('auth.register') }}"><button>Créer un compte</button></a>
+          {% if not config.DISABLE_REGISTER %}
+            <a href="{{ url_for('auth.register') }}"><button>Créer un compte</button></a>
+          {% endif %}
           <a href="{{ url_for('auth.login') }}"><button>Se connecter</button></a>
         {% endif %}
       </div>