diff --git a/app/views/settings/show.json.jbuilder b/app/views/settings/show.json.jbuilder
index c3e515fd2..db39d1dff 100644
--- a/app/views/settings/show.json.jbuilder
+++ b/app/views/settings/show.json.jbuilder
@@ -31,7 +31,7 @@ json.setting do
   json.name default_setting.name
   json.nav_logo_url default_setting.nav_logo_url&.[](1..-1)
   json.login_logo_url default_setting.login_logo_url&.[](1..-1)
-  json.tab_logo_url default_setting.tab_logo_url&.[](1..-1)
+  json.tab_logo_url default_setting.tab_logo_url.present? ? default_setting.tab_logo_url&.[](1..-1) : "favicon.ico"
   json.site_page_deploy_domain  @deploy_domain
 
   json.subject_banner_url default_setting.subject_banner_url&.[](1..-1)