diff --git a/src/Form/GeneralSettingsForm.php b/src/Form/GeneralSettingsForm.php
index f12a811..9a48cc9 100644
--- a/src/Form/GeneralSettingsForm.php
+++ b/src/Form/GeneralSettingsForm.php
@@ -87,7 +87,7 @@ class GeneralSettingsForm extends ConfigFormBase {
     );
 
     $layout_plugins = $this->diffLayoutManager->getDefinitions();
-    $weight = max($layout_plugins) + 1;
+    $weight = count($layout_plugins) + 1;
     $layout_plugins_order = [];
     foreach ($layout_plugins as $id => $layout_plugin) {
       $layout_plugins_order[$id] = [