diff --git a/app/controllers/api/v1/timelines/public_controller.rb b/app/controllers/api/v1/timelines/public_controller.rb
index 18c135e1e68815..31250942540666 100644
--- a/app/controllers/api/v1/timelines/public_controller.rb
+++ b/app/controllers/api/v1/timelines/public_controller.rb
@@ -14,7 +14,9 @@ def show
   private
 
   def require_auth?
-    !Setting.timeline_preview || !Setting.timeline_preview_local && truthy_param?(:local) || !Setting.timeline_preview_remote && truthy_param?(:remote)
+    !Setting.timeline_preview
+    !Setting.timeline_preview_local && truthy_param?(:local)
+    !Setting.timeline_preview_remote && truthy_param?(:remote)
   end
 
   def require_auth_local?