diff --git a/app/site.rb b/app/site.rb
index 94a6894e..5cbd7c61 100644
--- a/app/site.rb
+++ b/app/site.rb
@@ -30,7 +30,8 @@ end
 
 post '/site/:username/set_editor_theme' do
   require_login
-  current_site.update editor_theme: params[:editor_theme]
+  current_site.editor_theme = params[:editor_theme]
+  current_site.save_changes validate: false
   'ok'
 end