diff --git a/truthinquiry/routes/routes_admin.py b/truthinquiry/routes/routes_admin.py
index 8b831a7..a4d23b7 100644
--- a/truthinquiry/routes/routes_admin.py
+++ b/truthinquiry/routes/routes_admin.py
@@ -19,7 +19,8 @@ def index():
 
 @routes_admin.route("/auth")
 def auth():
-    return flask.render_template("admin/auth.html")
+    input_failed = bool(flask.request.values.get("failed"))
+    return flask.render_template("admin/auth.html", failed=input_failed)
 
 @routes_admin.route("/npc/<npc_id>")
 @require_admin(ui=True)
diff --git a/truthinquiry/templates/admin/auth.html b/truthinquiry/templates/admin/auth.html
index 122bfa8..66dd733 100644
--- a/truthinquiry/templates/admin/auth.html
+++ b/truthinquiry/templates/admin/auth.html
@@ -1,3 +1,7 @@
+{% if failed %}
+<p style="color: red"> Invalid password !</p>
+{% endif %}
+
 <form action="/api/v1/admin/auth" method="POST">
     <p>Password :</p>
     <input name="password">