diff --git a/src/Wallabag/CoreBundle/Controller/ConfigController.php b/src/Wallabag/CoreBundle/Controller/ConfigController.php
index d5873ca8d..5841f4da7 100644
--- a/src/Wallabag/CoreBundle/Controller/ConfigController.php
+++ b/src/Wallabag/CoreBundle/Controller/ConfigController.php
@@ -43,6 +43,16 @@ class ConfigController extends Controller
         $configForm->handleRequest($request);
 
         if ($configForm->isSubmitted() && $configForm->isValid()) {
+            // force theme to material to avoid using baggy
+            if ('baggy' === $config->getTheme()) {
+                $config->setTheme('material');
+
+                $this->addFlash(
+                    'notice',
+                    'Baggy is deprecated, forced to Material theme.'
+                );
+            }
+
             $em->persist($config);
             $em->flush();
 
diff --git a/src/Wallabag/CoreBundle/Form/Type/ConfigType.php b/src/Wallabag/CoreBundle/Form/Type/ConfigType.php
index 6901fa08e..af916b29f 100644
--- a/src/Wallabag/CoreBundle/Form/Type/ConfigType.php
+++ b/src/Wallabag/CoreBundle/Form/Type/ConfigType.php
@@ -24,7 +24,13 @@ class ConfigType extends AbstractType
         $this->themes = array_combine(
             $themes,
             array_map(function ($s) {
-                return ucwords(strtolower(str_replace('-', ' ', $s)));
+                $cleanTheme = ucwords(strtolower(str_replace('-', ' ', $s)));
+
+                if ('Baggy' === $cleanTheme) {
+                    $cleanTheme = 'Baggy (DEPRECATED)';
+                }
+
+                return $cleanTheme;
             }, $themes)
         );
 
diff --git a/src/Wallabag/CoreBundle/Resources/views/themes/baggy/layout.html.twig b/src/Wallabag/CoreBundle/Resources/views/themes/baggy/layout.html.twig
index 33b0ac8b7..d0be1e5cc 100644
--- a/src/Wallabag/CoreBundle/Resources/views/themes/baggy/layout.html.twig
+++ b/src/Wallabag/CoreBundle/Resources/views/themes/baggy/layout.html.twig
@@ -57,6 +57,11 @@
 {% endblock %}
 
 {% block messages %}
+    <div style="margin-top: 10px; color: #e01a15; border-left: 20px #e01a15 solid; padding-left: 10px; border-bottom: 6px #e01a15 solid; border-bottom-left-radius: 10px;">
+        <h3>⚠️ You are using the Baggy theme which is now deprecated.</h3>
+        <p>It will be removed in the next version. You can use the Material theme by <a href="{{ path('config') }}">updating the theme config</a>.</p>
+    </div>
+
     {% for flashMessage in app.session.flashbag.get('notice') %}
         <div class="messages success">
             <a href="#" class="closeMessage">×</a>